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Finding the Fourth Proportional to 78,732,133.90, 118,098,200.85 and 78,732,133.90

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Solution

The fourth proportional to 78,732,133.90, 118,098,200.85 and 78,732,133.90 is: 118,098,200.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,732,133.90 : 118,098,200.85 = 78,732,133.90 : x
  2. Step 2: Convert to fraction form
    78,732,133.90/118,098,200.85 = 78,732,133.90/x
  3. Step 3: Cross multiply
    78,732,133.90x = 118,098,200.85 × 78,732,133.90
  4. Step 4: Simplify right side
    78,732,133.90x = 9,298,123,362,671,294
  5. Step 5: Solve for x
    x = 9,298,123,362,671,294/78,732,133.90
  6. Step 6: Final answer
    x = 118,098,200.85

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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.