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Finding the Fourth Proportional to 98,181.81, 147,272.81 and 28,061.15

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Solution

The fourth proportional to 98,181.81, 147,272.81 and 28,061.15 is: 42,091.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,181.81 : 147,272.81 = 28,061.15 : x
  2. Step 2: Convert to fraction form
    98,181.81/147,272.81 = 28,061.15/x
  3. Step 3: Cross multiply
    98,181.81x = 147,272.81 × 28,061.15
  4. Step 4: Simplify right side
    98,181.81x = 4,132,643,535.66
  5. Step 5: Solve for x
    x = 4,132,643,535.66/98,181.81
  6. Step 6: Final answer
    x = 42,091.74

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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.