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Finding the Fourth Proportional to 98,373.96, 147,561.84 and 28,253.28

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Solution

The fourth proportional to 98,373.96, 147,561.84 and 28,253.28 is: 42,380.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,373.96 : 147,561.84 = 28,253.28 : x
  2. Step 2: Convert to fraction form
    98,373.96/147,561.84 = 28,253.28/x
  3. Step 3: Cross multiply
    98,373.96x = 147,561.84 × 28,253.28
  4. Step 4: Simplify right side
    98,373.96x = 4,169,105,982.84
  5. Step 5: Solve for x
    x = 4,169,105,982.84/98,373.96
  6. Step 6: Final answer
    x = 42,380.18

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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.