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Finding the Fourth Proportional to 292,367.15, 438,725.68 and 126,155.15

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Solution

The fourth proportional to 292,367.15, 438,725.68 and 126,155.15 is: 189,308.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,367.15 : 438,725.68 = 126,155.15 : x
  2. Step 2: Convert to fraction form
    292,367.15/438,725.68 = 126,155.15/x
  3. Step 3: Cross multiply
    292,367.15x = 438,725.68 × 126,155.15
  4. Step 4: Simplify right side
    292,367.15x = 55,347,503,105.46
  5. Step 5: Solve for x
    x = 55,347,503,105.46/292,367.15
  6. Step 6: Final answer
    x = 189,308.22

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1.5x scale

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.