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Finding the Fourth Proportional to 56,209.40, 84,315.54 and 26,620.28

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Solution

The fourth proportional to 56,209.40, 84,315.54 and 26,620.28 is: 39,931.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,209.40 : 84,315.54 = 26,620.28 : x
  2. Step 2: Convert to fraction form
    56,209.40/84,315.54 = 26,620.28/x
  3. Step 3: Cross multiply
    56,209.40x = 84,315.54 × 26,620.28
  4. Step 4: Simplify right side
    56,209.40x = 2,244,503,283.15
  5. Step 5: Solve for x
    x = 2,244,503,283.15/56,209.40
  6. Step 6: Final answer
    x = 39,931.10

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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.