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Finding the Fourth Proportional to 108,710.10, 163,041.36 and 55,345.50

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Solution

The fourth proportional to 108,710.10, 163,041.36 and 55,345.50 is: 83,006.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,710.10 : 163,041.36 = 55,345.50 : x
  2. Step 2: Convert to fraction form
    108,710.10/163,041.36 = 55,345.50/x
  3. Step 3: Cross multiply
    108,710.10x = 163,041.36 × 55,345.50
  4. Step 4: Simplify right side
    108,710.10x = 9,023,605,589.88
  5. Step 5: Solve for x
    x = 9,023,605,589.88/108,710.10
  6. Step 6: Final answer
    x = 83,006.14

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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.