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Finding the Fourth Proportional to 42,818.56, 64,214.56 and 15,110.08

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Solution

The fourth proportional to 42,818.56, 64,214.56 and 15,110.08 is: 22,660.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,818.56 : 64,214.56 = 15,110.08 : x
  2. Step 2: Convert to fraction form
    42,818.56/64,214.56 = 15,110.08/x
  3. Step 3: Cross multiply
    42,818.56x = 64,214.56 × 15,110.08
  4. Step 4: Simplify right side
    42,818.56x = 970,287,138.76
  5. Step 5: Solve for x
    x = 970,287,138.76/42,818.56
  6. Step 6: Final answer
    x = 22,660.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.