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Finding the Fourth Proportional to 60,403.76, 90,604.92 and 42,560.72

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Solution

The fourth proportional to 60,403.76, 90,604.92 and 42,560.72 is: 63,840.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,403.76 : 90,604.92 = 42,560.72 : x
  2. Step 2: Convert to fraction form
    60,403.76/90,604.92 = 42,560.72/x
  3. Step 3: Cross multiply
    60,403.76x = 90,604.92 × 42,560.72
  4. Step 4: Simplify right side
    60,403.76x = 3,856,210,630.74
  5. Step 5: Solve for x
    x = 3,856,210,630.74/60,403.76
  6. Step 6: Final answer
    x = 63,840.57

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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.