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Finding the Fourth Proportional to 18,730.76, 25,848.10 and 10,347.08

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Solution

The fourth proportional to 18,730.76, 25,848.10 and 10,347.08 is: 14,278.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,730.76 : 25,848.10 = 10,347.08 : x
  2. Step 2: Convert to fraction form
    18,730.76/25,848.10 = 10,347.08/x
  3. Step 3: Cross multiply
    18,730.76x = 25,848.10 × 10,347.08
  4. Step 4: Simplify right side
    18,730.76x = 267,452,358.55
  5. Step 5: Solve for x
    x = 267,452,358.55/18,730.76
  6. Step 6: Final answer
    x = 14,278.78

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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.