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Finding the Fourth Proportional to 65,613.65, 90,500.17 and 43,798.92

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Solution

The fourth proportional to 65,613.65, 90,500.17 and 43,798.92 is: 60,411.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,613.65 : 90,500.17 = 43,798.92 : x
  2. Step 2: Convert to fraction form
    65,613.65/90,500.17 = 43,798.92/x
  3. Step 3: Cross multiply
    65,613.65x = 90,500.17 × 43,798.92
  4. Step 4: Simplify right side
    65,613.65x = 3,963,809,705.82
  5. Step 5: Solve for x
    x = 3,963,809,705.82/65,613.65
  6. Step 6: Final answer
    x = 60,411.36

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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.