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Finding the Fourth Proportional to 15,909.19, 23,868.15 and 7,031.65

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Solution

The fourth proportional to 15,909.19, 23,868.15 and 7,031.65 is: 10,549.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,909.19 : 23,868.15 = 7,031.65 : x
  2. Step 2: Convert to fraction form
    15,909.19/23,868.15 = 7,031.65/x
  3. Step 3: Cross multiply
    15,909.19x = 23,868.15 × 7,031.65
  4. Step 4: Simplify right side
    15,909.19x = 167,832,476.95
  5. Step 5: Solve for x
    x = 167,832,476.95/15,909.19
  6. Step 6: Final answer
    x = 10,549.40

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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.