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Finding the Fourth Proportional to 15,139.65, 22,851.68 and 15,139.65

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Solution

The fourth proportional to 15,139.65, 22,851.68 and 15,139.65 is: 22,851.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,139.65 : 22,851.68 = 15,139.65 : x
  2. Step 2: Convert to fraction form
    15,139.65/22,851.68 = 15,139.65/x
  3. Step 3: Cross multiply
    15,139.65x = 22,851.68 × 15,139.65
  4. Step 4: Simplify right side
    15,139.65x = 345,966,361.15
  5. Step 5: Solve for x
    x = 345,966,361.15/15,139.65
  6. Step 6: Final answer
    x = 22,851.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.