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Finding the Fourth Proportional to 357,459.27, 536,188.56 and 91,219.79

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Solution

The fourth proportional to 357,459.27, 536,188.56 and 91,219.79 is: 136,829.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,459.27 : 536,188.56 = 91,219.79 : x
  2. Step 2: Convert to fraction form
    357,459.27/536,188.56 = 91,219.79/x
  3. Step 3: Cross multiply
    357,459.27x = 536,188.56 × 91,219.79
  4. Step 4: Simplify right side
    357,459.27x = 48,911,005,162.66
  5. Step 5: Solve for x
    x = 48,911,005,162.66/357,459.27
  6. Step 6: Final answer
    x = 136,829.59

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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.