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Finding the Fourth Proportional to 67,308.85, 100,844.74 and 59,978.53

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Solution

The fourth proportional to 67,308.85, 100,844.74 and 59,978.53 is: 89,862.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,308.85 : 100,844.74 = 59,978.53 : x
  2. Step 2: Convert to fraction form
    67,308.85/100,844.74 = 59,978.53/x
  3. Step 3: Cross multiply
    67,308.85x = 100,844.74 × 59,978.53
  4. Step 4: Simplify right side
    67,308.85x = 6,048,518,459.32
  5. Step 5: Solve for x
    x = 6,048,518,459.32/67,308.85
  6. Step 6: Final answer
    x = 89,862.16

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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.