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Finding the Fourth Proportional to 98,486.70, 147,776.18 and 48,539.57

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Solution

The fourth proportional to 98,486.70, 147,776.18 and 48,539.57 is: 72,832.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,486.70 : 147,776.18 = 48,539.57 : x
  2. Step 2: Convert to fraction form
    98,486.70/147,776.18 = 48,539.57/x
  3. Step 3: Cross multiply
    98,486.70x = 147,776.18 × 48,539.57
  4. Step 4: Simplify right side
    98,486.70x = 7,172,991,251.86
  5. Step 5: Solve for x
    x = 7,172,991,251.86/98,486.70
  6. Step 6: Final answer
    x = 72,832.08

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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.