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Finding the Fourth Proportional to 65,718.92, 90,658.42 and 44,490.76

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Solution

The fourth proportional to 65,718.92, 90,658.42 and 44,490.76 is: 61,374.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,718.92 : 90,658.42 = 44,490.76 : x
  2. Step 2: Convert to fraction form
    65,718.92/90,658.42 = 44,490.76/x
  3. Step 3: Cross multiply
    65,718.92x = 90,658.42 × 44,490.76
  4. Step 4: Simplify right side
    65,718.92x = 4,033,462,006.20
  5. Step 5: Solve for x
    x = 4,033,462,006.20/65,718.92
  6. Step 6: Final answer
    x = 61,374.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.