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Finding the Fourth Proportional to 57,798.30, 86,697.45 and 18,359.40

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Solution

The fourth proportional to 57,798.30, 86,697.45 and 18,359.40 is: 27,539.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,798.30 : 86,697.45 = 18,359.40 : x
  2. Step 2: Convert to fraction form
    57,798.30/86,697.45 = 18,359.40/x
  3. Step 3: Cross multiply
    57,798.30x = 86,697.45 × 18,359.40
  4. Step 4: Simplify right side
    57,798.30x = 1,591,713,163.53
  5. Step 5: Solve for x
    x = 1,591,713,163.53/57,798.30
  6. Step 6: Final answer
    x = 27,539.10

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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.