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Finding the Fourth Proportional to 28,123.58, 38,806.08 and 18,061.22

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Solution

The fourth proportional to 28,123.58, 38,806.08 and 18,061.22 is: 24,921.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,123.58 : 38,806.08 = 18,061.22 : x
  2. Step 2: Convert to fraction form
    28,123.58/38,806.08 = 18,061.22/x
  3. Step 3: Cross multiply
    28,123.58x = 38,806.08 × 18,061.22
  4. Step 4: Simplify right side
    28,123.58x = 700,885,148.22
  5. Step 5: Solve for x
    x = 700,885,148.22/28,123.58
  6. Step 6: Final answer
    x = 24,921.62

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Half scale
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Double scale
Find fourth proportional to 28,124.58, 38,807.46 and 18,062.22
Similar ratio
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1.5x scale

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.