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Finding the Fourth Proportional to 10,920.70, 15,070.56 and 5,952.70

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Solution

The fourth proportional to 10,920.70, 15,070.56 and 5,952.70 is: 8,214.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,920.70 : 15,070.56 = 5,952.70 : x
  2. Step 2: Convert to fraction form
    10,920.70/15,070.56 = 5,952.70/x
  3. Step 3: Cross multiply
    10,920.70x = 15,070.56 × 5,952.70
  4. Step 4: Simplify right side
    10,920.70x = 89,710,447.16
  5. Step 5: Solve for x
    x = 89,710,447.16/10,920.70
  6. Step 6: Final answer
    x = 8,214.72

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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.