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Finding the Fourth Proportional to 25,398.65, 38,042.68 and 15,507.94

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Solution

The fourth proportional to 25,398.65, 38,042.68 and 15,507.94 is: 23,228.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,398.65 : 38,042.68 = 15,507.94 : x
  2. Step 2: Convert to fraction form
    25,398.65/38,042.68 = 15,507.94/x
  3. Step 3: Cross multiply
    25,398.65x = 38,042.68 × 15,507.94
  4. Step 4: Simplify right side
    25,398.65x = 589,963,598.88
  5. Step 5: Solve for x
    x = 589,963,598.88/25,398.65
  6. Step 6: Final answer
    x = 23,228.15

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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.