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Finding the Fourth Proportional to 60,988.78, 91,483.14 and 40,207.42

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Solution

The fourth proportional to 60,988.78, 91,483.14 and 40,207.42 is: 60,311.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,988.78 : 91,483.14 = 40,207.42 : x
  2. Step 2: Convert to fraction form
    60,988.78/91,483.14 = 40,207.42/x
  3. Step 3: Cross multiply
    60,988.78x = 91,483.14 × 40,207.42
  4. Step 4: Simplify right side
    60,988.78x = 3,678,301,032.90
  5. Step 5: Solve for x
    x = 3,678,301,032.90/60,988.78
  6. Step 6: Final answer
    x = 60,311.11

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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.