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Finding the Fourth Proportional to 173,439.61, 260,123.66 and 66,786.96

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Solution

The fourth proportional to 173,439.61, 260,123.66 and 66,786.96 is: 100,166.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,439.61 : 260,123.66 = 66,786.96 : x
  2. Step 2: Convert to fraction form
    173,439.61/260,123.66 = 66,786.96/x
  3. Step 3: Cross multiply
    173,439.61x = 260,123.66 × 66,786.96
  4. Step 4: Simplify right side
    173,439.61x = 17,372,869,688.76
  5. Step 5: Solve for x
    x = 17,372,869,688.76/173,439.61
  6. Step 6: Final answer
    x = 100,166.68

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1.5x scale

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.