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Finding the Fourth Proportional to 15,700.59, 21,668.33 and 8,984.88

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Solution

The fourth proportional to 15,700.59, 21,668.33 and 8,984.88 is: 12,400.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,700.59 : 21,668.33 = 8,984.88 : x
  2. Step 2: Convert to fraction form
    15,700.59/21,668.33 = 8,984.88/x
  3. Step 3: Cross multiply
    15,700.59x = 21,668.33 × 8,984.88
  4. Step 4: Simplify right side
    15,700.59x = 194,687,299.93
  5. Step 5: Solve for x
    x = 194,687,299.93/15,700.59
  6. Step 6: Final answer
    x = 12,400.00

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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.