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Finding the Fourth Proportional to 57,803.66, 86,699.19 and 39,203.18

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Solution

The fourth proportional to 57,803.66, 86,699.19 and 39,203.18 is: 58,800.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,803.66 : 86,699.19 = 39,203.18 : x
  2. Step 2: Convert to fraction form
    57,803.66/86,699.19 = 39,203.18/x
  3. Step 3: Cross multiply
    57,803.66x = 86,699.19 × 39,203.18
  4. Step 4: Simplify right side
    57,803.66x = 3,398,883,951.42
  5. Step 5: Solve for x
    x = 3,398,883,951.42/57,803.66
  6. Step 6: Final answer
    x = 58,800.50

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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.