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Finding the Fourth Proportional to 74,657.10, 111,856.05 and 48,348.30

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Solution

The fourth proportional to 74,657.10, 111,856.05 and 48,348.30 is: 72,438.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,657.10 : 111,856.05 = 48,348.30 : x
  2. Step 2: Convert to fraction form
    74,657.10/111,856.05 = 48,348.30/x
  3. Step 3: Cross multiply
    74,657.10x = 111,856.05 × 48,348.30
  4. Step 4: Simplify right side
    74,657.10x = 5,408,049,862.22
  5. Step 5: Solve for x
    x = 5,408,049,862.22/74,657.10
  6. Step 6: Final answer
    x = 72,438.52

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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.