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Finding the Fourth Proportional to 356,585.10, 534,902.25 and 103,867.68

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Solution

The fourth proportional to 356,585.10, 534,902.25 and 103,867.68 is: 155,808.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,585.10 : 534,902.25 = 103,867.68 : x
  2. Step 2: Convert to fraction form
    356,585.10/534,902.25 = 103,867.68/x
  3. Step 3: Cross multiply
    356,585.10x = 534,902.25 × 103,867.68
  4. Step 4: Simplify right side
    356,585.10x = 55,559,058,129.67
  5. Step 5: Solve for x
    x = 55,559,058,129.67/356,585.10
  6. Step 6: Final answer
    x = 155,808.69

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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.