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Finding the Fourth Proportional to 14,011.92, 21,011.76 and 7,436.52

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Solution

The fourth proportional to 14,011.92, 21,011.76 and 7,436.52 is: 11,151.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,011.92 : 21,011.76 = 7,436.52 : x
  2. Step 2: Convert to fraction form
    14,011.92/21,011.76 = 7,436.52/x
  3. Step 3: Cross multiply
    14,011.92x = 21,011.76 × 7,436.52
  4. Step 4: Simplify right side
    14,011.92x = 156,254,373.48
  5. Step 5: Solve for x
    x = 156,254,373.48/14,011.92
  6. Step 6: Final answer
    x = 11,151.53

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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.