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Finding the Fourth Proportional to 73,595.71, 110,391.04 and 21,005.20

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Solution

The fourth proportional to 73,595.71, 110,391.04 and 21,005.20 is: 31,507.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,595.71 : 110,391.04 = 21,005.20 : x
  2. Step 2: Convert to fraction form
    73,595.71/110,391.04 = 21,005.20/x
  3. Step 3: Cross multiply
    73,595.71x = 110,391.04 × 21,005.20
  4. Step 4: Simplify right side
    73,595.71x = 2,318,785,873.41
  5. Step 5: Solve for x
    x = 2,318,785,873.41/73,595.71
  6. Step 6: Final answer
    x = 31,507.08

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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.