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Finding the Fourth Proportional to 12,166.74, 18,254.88 and 4,769.93

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Solution

The fourth proportional to 12,166.74, 18,254.88 and 4,769.93 is: 7,156.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,166.74 : 18,254.88 = 4,769.93 : x
  2. Step 2: Convert to fraction form
    12,166.74/18,254.88 = 4,769.93/x
  3. Step 3: Cross multiply
    12,166.74x = 18,254.88 × 4,769.93
  4. Step 4: Simplify right side
    12,166.74x = 87,074,545.40
  5. Step 5: Solve for x
    x = 87,074,545.40/12,166.74
  6. Step 6: Final answer
    x = 7,156.77

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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.