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Finding the Fourth Proportional to 78,894,233.20, 118,341,349.80 and 78,894,233.20

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Solution

The fourth proportional to 78,894,233.20, 118,341,349.80 and 78,894,233.20 is: 118,341,349.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,894,233.20 : 118,341,349.80 = 78,894,233.20 : x
  2. Step 2: Convert to fraction form
    78,894,233.20/118,341,349.80 = 78,894,233.20/x
  3. Step 3: Cross multiply
    78,894,233.20x = 118,341,349.80 × 78,894,233.20
  4. Step 4: Simplify right side
    78,894,233.20x = 9,336,450,048,323,974
  5. Step 5: Solve for x
    x = 9,336,450,048,323,974/78,894,233.20
  6. Step 6: Final answer
    x = 118,341,349.80

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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.