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Finding the Fourth Proportional to 10,915,214.80, 15,303,695.60 and 10,915,214.80

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Solution

The fourth proportional to 10,915,214.80, 15,303,695.60 and 10,915,214.80 is: 15,303,695.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,915,214.80 : 15,303,695.60 = 10,915,214.80 : x
  2. Step 2: Convert to fraction form
    10,915,214.80/15,303,695.60 = 10,915,214.80/x
  3. Step 3: Cross multiply
    10,915,214.80x = 15,303,695.60 × 10,915,214.80
  4. Step 4: Simplify right side
    10,915,214.80x = 167,043,124,707,814.88
  5. Step 5: Solve for x
    x = 167,043,124,707,814.88/10,915,214.80
  6. Step 6: Final answer
    x = 15,303,695.60

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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.