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Finding the Fourth Proportional to 17,856.68, 24,640.47 and 9,898.74

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Solution

The fourth proportional to 17,856.68, 24,640.47 and 9,898.74 is: 13,659.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,856.68 : 24,640.47 = 9,898.74 : x
  2. Step 2: Convert to fraction form
    17,856.68/24,640.47 = 9,898.74/x
  3. Step 3: Cross multiply
    17,856.68x = 24,640.47 × 9,898.74
  4. Step 4: Simplify right side
    17,856.68x = 243,909,606.01
  5. Step 5: Solve for x
    x = 243,909,606.01/17,856.68
  6. Step 6: Final answer
    x = 13,659.30

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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.