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Finding the Fourth Proportional to 38,952.04, 53,753.80 and 21,047.04

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Solution

The fourth proportional to 38,952.04, 53,753.80 and 21,047.04 is: 29,044.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,952.04 : 53,753.80 = 21,047.04 : x
  2. Step 2: Convert to fraction form
    38,952.04/53,753.80 = 21,047.04/x
  3. Step 3: Cross multiply
    38,952.04x = 53,753.80 × 21,047.04
  4. Step 4: Simplify right side
    38,952.04x = 1,131,358,378.75
  5. Step 5: Solve for x
    x = 1,131,358,378.75/38,952.04
  6. Step 6: Final answer
    x = 29,044.91

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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.