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Finding the Fourth Proportional to 65,866,999.76, 90,866,651.73 and 39,753,170.00

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Solution

The fourth proportional to 65,866,999.76, 90,866,651.73 and 39,753,170.00 is: 54,841,384.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,866,999.76 : 90,866,651.73 = 39,753,170.00 : x
  2. Step 2: Convert to fraction form
    65,866,999.76/90,866,651.73 = 39,753,170.00/x
  3. Step 3: Cross multiply
    65,866,999.76x = 90,866,651.73 × 39,753,170.00
  4. Step 4: Simplify right side
    65,866,999.76x = 3,612,237,453,514,438
  5. Step 5: Solve for x
    x = 3,612,237,453,514,438/65,866,999.76
  6. Step 6: Final answer
    x = 54,841,384.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.