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Finding the Fourth Proportional to 98,511.55, 147,699.80 and 35,330.31

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Solution

The fourth proportional to 98,511.55, 147,699.80 and 35,330.31 is: 52,971.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,511.55 : 147,699.80 = 35,330.31 : x
  2. Step 2: Convert to fraction form
    98,511.55/147,699.80 = 35,330.31/x
  3. Step 3: Cross multiply
    98,511.55x = 147,699.80 × 35,330.31
  4. Step 4: Simplify right side
    98,511.55x = 5,218,279,720.94
  5. Step 5: Solve for x
    x = 5,218,279,720.94/98,511.55
  6. Step 6: Final answer
    x = 52,971.25

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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.