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Finding the Fourth Proportional to 99,485, 137,318.18 and 59,226.92

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Solution

The fourth proportional to 99,485, 137,318.18 and 59,226.92 is: 81,750.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,485 : 137,318.18 = 59,226.92 : x
  2. Step 2: Convert to fraction form
    99,485/137,318.18 = 59,226.92/x
  3. Step 3: Cross multiply
    99,485x = 137,318.18 × 59,226.92
  4. Step 4: Simplify right side
    99,485x = 8,132,932,861.41
  5. Step 5: Solve for x
    x = 8,132,932,861.41/99,485
  6. Step 6: Final answer
    x = 81,750.34

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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.