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Finding the Fourth Proportional to 98,426.90, 147,663.72 and 31,867.04

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Solution

The fourth proportional to 98,426.90, 147,663.72 and 31,867.04 is: 47,808.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,426.90 : 147,663.72 = 31,867.04 : x
  2. Step 2: Convert to fraction form
    98,426.90/147,663.72 = 31,867.04/x
  3. Step 3: Cross multiply
    98,426.90x = 147,663.72 × 31,867.04
  4. Step 4: Simplify right side
    98,426.90x = 4,705,605,671.79
  5. Step 5: Solve for x
    x = 4,705,605,671.79/98,426.90
  6. Step 6: Final answer
    x = 47,808.13

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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.