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Finding the Fourth Proportional to 73,102,878.80, 109,654,318.20 and 65,166,693.20

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Solution

The fourth proportional to 73,102,878.80, 109,654,318.20 and 65,166,693.20 is: 97,750,039.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,102,878.80 : 109,654,318.20 = 65,166,693.20 : x
  2. Step 2: Convert to fraction form
    73,102,878.80/109,654,318.20 = 65,166,693.20/x
  3. Step 3: Cross multiply
    73,102,878.80x = 109,654,318.20 × 65,166,693.20
  4. Step 4: Simplify right side
    73,102,878.80x = 7,145,809,312,194,577
  5. Step 5: Solve for x
    x = 7,145,809,312,194,577/73,102,878.80
  6. Step 6: Final answer
    x = 97,750,039.80

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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.