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Finding the Fourth Proportional to 354,398.52, 531,597.76 and 91,742.52

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Solution

The fourth proportional to 354,398.52, 531,597.76 and 91,742.52 is: 137,613.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,398.52 : 531,597.76 = 91,742.52 : x
  2. Step 2: Convert to fraction form
    354,398.52/531,597.76 = 91,742.52/x
  3. Step 3: Cross multiply
    354,398.52x = 531,597.76 × 91,742.52
  4. Step 4: Simplify right side
    354,398.52x = 48,770,118,128.76
  5. Step 5: Solve for x
    x = 48,770,118,128.76/354,398.52
  6. Step 6: Final answer
    x = 137,613.77

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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.