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Finding the Fourth Proportional to 27,580.50, 38,061.90 and 15,006.06

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Solution

The fourth proportional to 27,580.50, 38,061.90 and 15,006.06 is: 20,708.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,580.50 : 38,061.90 = 15,006.06 : x
  2. Step 2: Convert to fraction form
    27,580.50/38,061.90 = 15,006.06/x
  3. Step 3: Cross multiply
    27,580.50x = 38,061.90 × 15,006.06
  4. Step 4: Simplify right side
    27,580.50x = 571,159,155.11
  5. Step 5: Solve for x
    x = 571,159,155.11/27,580.50
  6. Step 6: Final answer
    x = 20,708.80

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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.