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Finding the Fourth Proportional to 38,920.64, 53,691.84 and 37,411.76

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Solution

The fourth proportional to 38,920.64, 53,691.84 and 37,411.76 is: 51,610.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,920.64 : 53,691.84 = 37,411.76 : x
  2. Step 2: Convert to fraction form
    38,920.64/53,691.84 = 37,411.76/x
  3. Step 3: Cross multiply
    38,920.64x = 53,691.84 × 37,411.76
  4. Step 4: Simplify right side
    38,920.64x = 2,008,706,232.04
  5. Step 5: Solve for x
    x = 2,008,706,232.04/38,920.64
  6. Step 6: Final answer
    x = 51,610.31

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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.