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Finding the Fourth Proportional to 64,651,751.60, 90,739,200.40 and 64,651,751.60

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Solution

The fourth proportional to 64,651,751.60, 90,739,200.40 and 64,651,751.60 is: 90,739,200.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,651,751.60 : 90,739,200.40 = 64,651,751.60 : x
  2. Step 2: Convert to fraction form
    64,651,751.60/90,739,200.40 = 64,651,751.60/x
  3. Step 3: Cross multiply
    64,651,751.60x = 90,739,200.40 × 64,651,751.60
  4. Step 4: Simplify right side
    64,651,751.60x = 5,866,448,244,643,421
  5. Step 5: Solve for x
    x = 5,866,448,244,643,421/64,651,751.60
  6. Step 6: Final answer
    x = 90,739,200.40

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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.