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Finding the Fourth Proportional to 38,651,603.88, 57,975,892.66 and 13,092,613.28

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Solution

The fourth proportional to 38,651,603.88, 57,975,892.66 and 13,092,613.28 is: 19,638,407.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,651,603.88 : 57,975,892.66 = 13,092,613.28 : x
  2. Step 2: Convert to fraction form
    38,651,603.88/57,975,892.66 = 13,092,613.28/x
  3. Step 3: Cross multiply
    38,651,603.88x = 57,975,892.66 × 13,092,613.28
  4. Step 4: Simplify right side
    38,651,603.88x = 759,055,942,160,170.50
  5. Step 5: Solve for x
    x = 759,055,942,160,170.50/38,651,603.88
  6. Step 6: Final answer
    x = 19,638,407.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.