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Finding the Fourth Proportional to 61,885.89, 85,398.78 and 36,396.78

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Solution

The fourth proportional to 61,885.89, 85,398.78 and 36,396.78 is: 50,225.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,885.89 : 85,398.78 = 36,396.78 : x
  2. Step 2: Convert to fraction form
    61,885.89/85,398.78 = 36,396.78/x
  3. Step 3: Cross multiply
    61,885.89x = 85,398.78 × 36,396.78
  4. Step 4: Simplify right side
    61,885.89x = 3,108,240,607.93
  5. Step 5: Solve for x
    x = 3,108,240,607.93/61,885.89
  6. Step 6: Final answer
    x = 50,225.35

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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.