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Finding the Fourth Proportional to 107,875.67, 148,865.36 and 67,611.65

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Solution

The fourth proportional to 107,875.67, 148,865.36 and 67,611.65 is: 93,302.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,875.67 : 148,865.36 = 67,611.65 : x
  2. Step 2: Convert to fraction form
    107,875.67/148,865.36 = 67,611.65/x
  3. Step 3: Cross multiply
    107,875.67x = 148,865.36 × 67,611.65
  4. Step 4: Simplify right side
    107,875.67x = 10,065,031,535.06
  5. Step 5: Solve for x
    x = 10,065,031,535.06/107,875.67
  6. Step 6: Final answer
    x = 93,302.15

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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.