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Finding the Fourth Proportional to 99,571.74, 137,459.79 and 67,475.92

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Solution

The fourth proportional to 99,571.74, 137,459.79 and 67,475.92 is: 93,151.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,571.74 : 137,459.79 = 67,475.92 : x
  2. Step 2: Convert to fraction form
    99,571.74/137,459.79 = 67,475.92/x
  3. Step 3: Cross multiply
    99,571.74x = 137,459.79 × 67,475.92
  4. Step 4: Simplify right side
    99,571.74x = 9,275,225,712.05
  5. Step 5: Solve for x
    x = 9,275,225,712.05/99,571.74
  6. Step 6: Final answer
    x = 93,151.19

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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.