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Finding the Fourth Proportional to 18,953.60, 26,154.79 and 10,455.83

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Solution

The fourth proportional to 18,953.60, 26,154.79 and 10,455.83 is: 14,428.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,953.60 : 26,154.79 = 10,455.83 : x
  2. Step 2: Convert to fraction form
    18,953.60/26,154.79 = 10,455.83/x
  3. Step 3: Cross multiply
    18,953.60x = 26,154.79 × 10,455.83
  4. Step 4: Simplify right side
    18,953.60x = 273,470,037.93
  5. Step 5: Solve for x
    x = 273,470,037.93/18,953.60
  6. Step 6: Final answer
    x = 14,428.40

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Half scale
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Double scale
Find fourth proportional to 18,954.60, 26,156.17 and 10,456.83
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.