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Finding the Fourth Proportional to 165,957,691.60, 248,936,537.40 and 89,430,187.60

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Solution

The fourth proportional to 165,957,691.60, 248,936,537.40 and 89,430,187.60 is: 134,145,281.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,957,691.60 : 248,936,537.40 = 89,430,187.60 : x
  2. Step 2: Convert to fraction form
    165,957,691.60/248,936,537.40 = 89,430,187.60/x
  3. Step 3: Cross multiply
    165,957,691.60x = 248,936,537.40 × 89,430,187.60
  4. Step 4: Simplify right side
    165,957,691.60x = 22,262,441,240,176,416
  5. Step 5: Solve for x
    x = 22,262,441,240,176,416/165,957,691.60
  6. Step 6: Final answer
    x = 134,145,281.40

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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.