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Finding the Fourth Proportional to 18,307.59, 25,267.80 and 10,349.79

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Solution

The fourth proportional to 18,307.59, 25,267.80 and 10,349.79 is: 14,284.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,307.59 : 25,267.80 = 10,349.79 : x
  2. Step 2: Convert to fraction form
    18,307.59/25,267.80 = 10,349.79/x
  3. Step 3: Cross multiply
    18,307.59x = 25,267.80 × 10,349.79
  4. Step 4: Simplify right side
    18,307.59x = 261,516,423.76
  5. Step 5: Solve for x
    x = 261,516,423.76/18,307.59
  6. Step 6: Final answer
    x = 14,284.59

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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.