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Finding the Fourth Proportional to 56,985.70, 85,410.28 and 26,549.80

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Solution

The fourth proportional to 56,985.70, 85,410.28 and 26,549.80 is: 39,792.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,985.70 : 85,410.28 = 26,549.80 : x
  2. Step 2: Convert to fraction form
    56,985.70/85,410.28 = 26,549.80/x
  3. Step 3: Cross multiply
    56,985.70x = 85,410.28 × 26,549.80
  4. Step 4: Simplify right side
    56,985.70x = 2,267,625,851.94
  5. Step 5: Solve for x
    x = 2,267,625,851.94/56,985.70
  6. Step 6: Final answer
    x = 39,792.89

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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.