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Finding the Fourth Proportional to 18,307.70, 25,264.65 and 9,924.20

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Solution

The fourth proportional to 18,307.70, 25,264.65 and 9,924.20 is: 13,695.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,307.70 : 25,264.65 = 9,924.20 : x
  2. Step 2: Convert to fraction form
    18,307.70/25,264.65 = 9,924.20/x
  3. Step 3: Cross multiply
    18,307.70x = 25,264.65 × 9,924.20
  4. Step 4: Simplify right side
    18,307.70x = 250,731,439.53
  5. Step 5: Solve for x
    x = 250,731,439.53/18,307.70
  6. Step 6: Final answer
    x = 13,695.41

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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.