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Finding the Fourth Proportional to 74,729.52, 112,123.44 and 43,122.88

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Solution

The fourth proportional to 74,729.52, 112,123.44 and 43,122.88 is: 64,701.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,729.52 : 112,123.44 = 43,122.88 : x
  2. Step 2: Convert to fraction form
    74,729.52/112,123.44 = 43,122.88/x
  3. Step 3: Cross multiply
    74,729.52x = 112,123.44 × 43,122.88
  4. Step 4: Simplify right side
    74,729.52x = 4,835,085,788.46
  5. Step 5: Solve for x
    x = 4,835,085,788.46/74,729.52
  6. Step 6: Final answer
    x = 64,701.15

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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.