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Finding the Fourth Proportional to 115,842.10, 173,860.35 and 56,728.30

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Solution

The fourth proportional to 115,842.10, 173,860.35 and 56,728.30 is: 85,140.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,842.10 : 173,860.35 = 56,728.30 : x
  2. Step 2: Convert to fraction form
    115,842.10/173,860.35 = 56,728.30/x
  3. Step 3: Cross multiply
    115,842.10x = 173,860.35 × 56,728.30
  4. Step 4: Simplify right side
    115,842.10x = 9,862,802,092.91
  5. Step 5: Solve for x
    x = 9,862,802,092.91/115,842.10
  6. Step 6: Final answer
    x = 85,140.05

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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.