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Finding the Fourth Proportional to 357,934.61, 536,889.57 and 91,697.74

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Solution

The fourth proportional to 357,934.61, 536,889.57 and 91,697.74 is: 137,543.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,934.61 : 536,889.57 = 91,697.74 : x
  2. Step 2: Convert to fraction form
    357,934.61/536,889.57 = 91,697.74/x
  3. Step 3: Cross multiply
    357,934.61x = 536,889.57 × 91,697.74
  4. Step 4: Simplify right side
    357,934.61x = 49,231,558,512.48
  5. Step 5: Solve for x
    x = 49,231,558,512.48/357,934.61
  6. Step 6: Final answer
    x = 137,543.44

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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.