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Finding the Fourth Proportional to 74,847.92, 112,352.76 and 66,580.88

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Solution

The fourth proportional to 74,847.92, 112,352.76 and 66,580.88 is: 99,943.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,847.92 : 112,352.76 = 66,580.88 : x
  2. Step 2: Convert to fraction form
    74,847.92/112,352.76 = 66,580.88/x
  3. Step 3: Cross multiply
    74,847.92x = 112,352.76 × 66,580.88
  4. Step 4: Simplify right side
    74,847.92x = 7,480,545,631.23
  5. Step 5: Solve for x
    x = 7,480,545,631.23/74,847.92
  6. Step 6: Final answer
    x = 99,943.27

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1.5x scale

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.