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Finding the Fourth Proportional to 17,875.80, 26,813.70 and 14,981.40

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Solution

The fourth proportional to 17,875.80, 26,813.70 and 14,981.40 is: 22,472.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,875.80 : 26,813.70 = 14,981.40 : x
  2. Step 2: Convert to fraction form
    17,875.80/26,813.70 = 14,981.40/x
  3. Step 3: Cross multiply
    17,875.80x = 26,813.70 × 14,981.40
  4. Step 4: Simplify right side
    17,875.80x = 401,706,765.18
  5. Step 5: Solve for x
    x = 401,706,765.18/17,875.80
  6. Step 6: Final answer
    x = 22,472.10

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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.