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Finding the Fourth Proportional to 318,207.61, 439,125.07 and 174,967.32

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Solution

The fourth proportional to 318,207.61, 439,125.07 and 174,967.32 is: 241,454.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,207.61 : 439,125.07 = 174,967.32 : x
  2. Step 2: Convert to fraction form
    318,207.61/439,125.07 = 174,967.32/x
  3. Step 3: Cross multiply
    318,207.61x = 439,125.07 × 174,967.32
  4. Step 4: Simplify right side
    318,207.61x = 76,832,534,967.05
  5. Step 5: Solve for x
    x = 76,832,534,967.05/318,207.61
  6. Step 6: Final answer
    x = 241,454.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.