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Finding the Fourth Proportional to 25,809.30, 38,719.23 and 14,721.30

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Solution

The fourth proportional to 25,809.30, 38,719.23 and 14,721.30 is: 22,084.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,809.30 : 38,719.23 = 14,721.30 : x
  2. Step 2: Convert to fraction form
    25,809.30/38,719.23 = 14,721.30/x
  3. Step 3: Cross multiply
    25,809.30x = 38,719.23 × 14,721.30
  4. Step 4: Simplify right side
    25,809.30x = 569,997,400.60
  5. Step 5: Solve for x
    x = 569,997,400.60/25,809.30
  6. Step 6: Final answer
    x = 22,084.96

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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.