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Finding the Fourth Proportional to 18,116.61, 25,000.61 and 10,158.81

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Solution

The fourth proportional to 18,116.61, 25,000.61 and 10,158.81 is: 14,018.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,116.61 : 25,000.61 = 10,158.81 : x
  2. Step 2: Convert to fraction form
    18,116.61/25,000.61 = 10,158.81/x
  3. Step 3: Cross multiply
    18,116.61x = 25,000.61 × 10,158.81
  4. Step 4: Simplify right side
    18,116.61x = 253,976,396.08
  5. Step 5: Solve for x
    x = 253,976,396.08/18,116.61
  6. Step 6: Final answer
    x = 14,018.98

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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.