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Finding the Fourth Proportional to 69,459.83, 104,149.51 and 61,156.52

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Solution

The fourth proportional to 69,459.83, 104,149.51 and 61,156.52 is: 91,699.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,459.83 : 104,149.51 = 61,156.52 : x
  2. Step 2: Convert to fraction form
    69,459.83/104,149.51 = 61,156.52/x
  3. Step 3: Cross multiply
    69,459.83x = 104,149.51 × 61,156.52
  4. Step 4: Simplify right side
    69,459.83x = 6,369,420,917.67
  5. Step 5: Solve for x
    x = 6,369,420,917.67/69,459.83
  6. Step 6: Final answer
    x = 91,699.35

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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.