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Finding the Fourth Proportional to 73,997,987.60, 110,996,981.40 and 72,864,246.80

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Solution

The fourth proportional to 73,997,987.60, 110,996,981.40 and 72,864,246.80 is: 109,296,370.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,997,987.60 : 110,996,981.40 = 72,864,246.80 : x
  2. Step 2: Convert to fraction form
    73,997,987.60/110,996,981.40 = 72,864,246.80/x
  3. Step 3: Cross multiply
    73,997,987.60x = 110,996,981.40 × 72,864,246.80
  4. Step 4: Simplify right side
    73,997,987.60x = 8,087,711,446,784,610
  5. Step 5: Solve for x
    x = 8,087,711,446,784,610/73,997,987.60
  6. Step 6: Final answer
    x = 109,296,370.20

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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.