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Finding the Fourth Proportional to 66,432,044.30, 99,648,066.45 and 60,479,905.10

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Solution

The fourth proportional to 66,432,044.30, 99,648,066.45 and 60,479,905.10 is: 90,719,857.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,432,044.30 : 99,648,066.45 = 60,479,905.10 : x
  2. Step 2: Convert to fraction form
    66,432,044.30/99,648,066.45 = 60,479,905.10/x
  3. Step 3: Cross multiply
    66,432,044.30x = 99,648,066.45 × 60,479,905.10
  4. Step 4: Simplify right side
    66,432,044.30x = 6,026,705,602,294,494
  5. Step 5: Solve for x
    x = 6,026,705,602,294,494/66,432,044.30
  6. Step 6: Final answer
    x = 90,719,857.65

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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.