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Finding the Fourth Proportional to 7,472.76, 10,312.95 and 5,348.49

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Solution

The fourth proportional to 7,472.76, 10,312.95 and 5,348.49 is: 7,381.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,472.76 : 10,312.95 = 5,348.49 : x
  2. Step 2: Convert to fraction form
    7,472.76/10,312.95 = 5,348.49/x
  3. Step 3: Cross multiply
    7,472.76x = 10,312.95 × 5,348.49
  4. Step 4: Simplify right side
    7,472.76x = 55,158,709.95
  5. Step 5: Solve for x
    x = 55,158,709.95/7,472.76
  6. Step 6: Final answer
    x = 7,381.30

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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.