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Finding the Fourth Proportional to 98,132.40, 147,263.08 and 53,790.52

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Solution

The fourth proportional to 98,132.40, 147,263.08 and 53,790.52 is: 80,721.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,132.40 : 147,263.08 = 53,790.52 : x
  2. Step 2: Convert to fraction form
    98,132.40/147,263.08 = 53,790.52/x
  3. Step 3: Cross multiply
    98,132.40x = 147,263.08 × 53,790.52
  4. Step 4: Simplify right side
    98,132.40x = 7,921,357,650.00
  5. Step 5: Solve for x
    x = 7,921,357,650.00/98,132.40
  6. Step 6: Final answer
    x = 80,721.12

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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.