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Finding the Fourth Proportional to 8,913.52, 12,301.97 and 5,135.96

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Solution

The fourth proportional to 8,913.52, 12,301.97 and 5,135.96 is: 7,088.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,913.52 : 12,301.97 = 5,135.96 : x
  2. Step 2: Convert to fraction form
    8,913.52/12,301.97 = 5,135.96/x
  3. Step 3: Cross multiply
    8,913.52x = 12,301.97 × 5,135.96
  4. Step 4: Simplify right side
    8,913.52x = 63,182,425.84
  5. Step 5: Solve for x
    x = 63,182,425.84/8,913.52
  6. Step 6: Final answer
    x = 7,088.38

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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.