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Finding the Fourth Proportional to 15,354,976,230.80, 21,525,990,487.60 and 15,354,976,230.80

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Solution

The fourth proportional to 15,354,976,230.80, 21,525,990,487.60 and 15,354,976,230.80 is: 21,525,990,487.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,354,976,230.80 : 21,525,990,487.60 = 15,354,976,230.80 : x
  2. Step 2: Convert to fraction form
    15,354,976,230.80/21,525,990,487.60 = 15,354,976,230.80/x
  3. Step 3: Cross multiply
    15,354,976,230.80x = 21,525,990,487.60 × 15,354,976,230.80
  4. Step 4: Simplify right side
    15,354,976,230.80x = 330,531,072,281,524,830,208
  5. Step 5: Solve for x
    x = 330,531,072,281,524,830,208/15,354,976,230.80
  6. Step 6: Final answer
    x = 21,525,990,487.60

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.