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Finding the Fourth Proportional to 78,894,005.70, 118,341,008.56 and 78,894,005.70

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Solution

The fourth proportional to 78,894,005.70, 118,341,008.56 and 78,894,005.70 is: 118,341,008.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,894,005.70 : 118,341,008.56 = 78,894,005.70 : x
  2. Step 2: Convert to fraction form
    78,894,005.70/118,341,008.56 = 78,894,005.70/x
  3. Step 3: Cross multiply
    78,894,005.70x = 118,341,008.56 × 78,894,005.70
  4. Step 4: Simplify right side
    78,894,005.70x = 9,336,396,203,876,390
  5. Step 5: Solve for x
    x = 9,336,396,203,876,390/78,894,005.70
  6. Step 6: Final answer
    x = 118,341,008.56

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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.