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Finding the Fourth Proportional to 14,775.48, 20,390.13 and 8,061.11

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Solution

The fourth proportional to 14,775.48, 20,390.13 and 8,061.11 is: 11,124.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,775.48 : 20,390.13 = 8,061.11 : x
  2. Step 2: Convert to fraction form
    14,775.48/20,390.13 = 8,061.11/x
  3. Step 3: Cross multiply
    14,775.48x = 20,390.13 × 8,061.11
  4. Step 4: Simplify right side
    14,775.48x = 164,367,082.03
  5. Step 5: Solve for x
    x = 164,367,082.03/14,775.48
  6. Step 6: Final answer
    x = 11,124.32

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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.