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Finding the Fourth Proportional to 159,587.60, 239,416.86 and 69,644.78

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Solution

The fourth proportional to 159,587.60, 239,416.86 and 69,644.78 is: 104,482.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,587.60 : 239,416.86 = 69,644.78 : x
  2. Step 2: Convert to fraction form
    159,587.60/239,416.86 = 69,644.78/x
  3. Step 3: Cross multiply
    159,587.60x = 239,416.86 × 69,644.78
  4. Step 4: Simplify right side
    159,587.60x = 16,674,134,542.99
  5. Step 5: Solve for x
    x = 16,674,134,542.99/159,587.60
  6. Step 6: Final answer
    x = 104,482.64

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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.