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Finding the Fourth Proportional to 387,924.72, 535,346.76 and 234,930.60

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Solution

The fourth proportional to 387,924.72, 535,346.76 and 234,930.60 is: 324,210.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,924.72 : 535,346.76 = 234,930.60 : x
  2. Step 2: Convert to fraction form
    387,924.72/535,346.76 = 234,930.60/x
  3. Step 3: Cross multiply
    387,924.72x = 535,346.76 × 234,930.60
  4. Step 4: Simplify right side
    387,924.72x = 125,769,335,534.86
  5. Step 5: Solve for x
    x = 125,769,335,534.86/387,924.72
  6. Step 6: Final answer
    x = 324,210.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.