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Finding the Fourth Proportional to 292,366.86, 438,725.26 and 126,154.86

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Solution

The fourth proportional to 292,366.86, 438,725.26 and 126,154.86 is: 189,307.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,366.86 : 438,725.26 = 126,154.86 : x
  2. Step 2: Convert to fraction form
    292,366.86/438,725.26 = 126,154.86/x
  3. Step 3: Cross multiply
    292,366.86x = 438,725.26 × 126,154.86
  4. Step 4: Simplify right side
    292,366.86x = 55,347,325,258.36
  5. Step 5: Solve for x
    x = 55,347,325,258.36/292,366.86
  6. Step 6: Final answer
    x = 189,307.79

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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.