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Finding the Fourth Proportional to 98,432.40, 147,648.60 and 92,600.40

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Solution

The fourth proportional to 98,432.40, 147,648.60 and 92,600.40 is: 138,900.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,432.40 : 147,648.60 = 92,600.40 : x
  2. Step 2: Convert to fraction form
    98,432.40/147,648.60 = 92,600.40/x
  3. Step 3: Cross multiply
    98,432.40x = 147,648.60 × 92,600.40
  4. Step 4: Simplify right side
    98,432.40x = 13,672,319,419.44
  5. Step 5: Solve for x
    x = 13,672,319,419.44/98,432.40
  6. Step 6: Final answer
    x = 138,900.60

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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.