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Finding the Fourth Proportional to 18,503.66, 25,535.03 and 10,005.76

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Solution

The fourth proportional to 18,503.66, 25,535.03 and 10,005.76 is: 13,807.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,503.66 : 25,535.03 = 10,005.76 : x
  2. Step 2: Convert to fraction form
    18,503.66/25,535.03 = 10,005.76/x
  3. Step 3: Cross multiply
    18,503.66x = 25,535.03 × 10,005.76
  4. Step 4: Simplify right side
    18,503.66x = 255,497,419.95
  5. Step 5: Solve for x
    x = 255,497,419.95/18,503.66
  6. Step 6: Final answer
    x = 13,807.94

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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.