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Finding the Fourth Proportional to 94,644,080.70, 141,966,121.05 and 78,488,274.30

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Solution

The fourth proportional to 94,644,080.70, 141,966,121.05 and 78,488,274.30 is: 117,732,411.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,644,080.70 : 141,966,121.05 = 78,488,274.30 : x
  2. Step 2: Convert to fraction form
    94,644,080.70/141,966,121.05 = 78,488,274.30/x
  3. Step 3: Cross multiply
    94,644,080.70x = 141,966,121.05 × 78,488,274.30
  4. Step 4: Simplify right side
    94,644,080.70x = 11,142,675,850,279,404
  5. Step 5: Solve for x
    x = 11,142,675,850,279,404/94,644,080.70
  6. Step 6: Final answer
    x = 117,732,411.45

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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.