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Finding the Fourth Proportional to 107,808.01, 148,762.14 and 61,865.29

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Solution

The fourth proportional to 107,808.01, 148,762.14 and 61,865.29 is: 85,366.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,808.01 : 148,762.14 = 61,865.29 : x
  2. Step 2: Convert to fraction form
    107,808.01/148,762.14 = 61,865.29/x
  3. Step 3: Cross multiply
    107,808.01x = 148,762.14 × 61,865.29
  4. Step 4: Simplify right side
    107,808.01x = 9,203,212,560.22
  5. Step 5: Solve for x
    x = 9,203,212,560.22/107,808.01
  6. Step 6: Final answer
    x = 85,366.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.