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Finding the Fourth Proportional to 103,735.90, 155,603.85 and 92,655.10

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Solution

The fourth proportional to 103,735.90, 155,603.85 and 92,655.10 is: 138,982.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,735.90 : 155,603.85 = 92,655.10 : x
  2. Step 2: Convert to fraction form
    103,735.90/155,603.85 = 92,655.10/x
  3. Step 3: Cross multiply
    103,735.90x = 155,603.85 × 92,655.10
  4. Step 4: Simplify right side
    103,735.90x = 14,417,490,282.14
  5. Step 5: Solve for x
    x = 14,417,490,282.14/103,735.90
  6. Step 6: Final answer
    x = 138,982.65

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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.