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Finding the Fourth Proportional to 57,586.98, 86,417.40 and 39,765.66

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Solution

The fourth proportional to 57,586.98, 86,417.40 and 39,765.66 is: 59,673.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,586.98 : 86,417.40 = 39,765.66 : x
  2. Step 2: Convert to fraction form
    57,586.98/86,417.40 = 39,765.66/x
  3. Step 3: Cross multiply
    57,586.98x = 86,417.40 × 39,765.66
  4. Step 4: Simplify right side
    57,586.98x = 3,436,444,946.48
  5. Step 5: Solve for x
    x = 3,436,444,946.48/57,586.98
  6. Step 6: Final answer
    x = 59,673.99

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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.