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Finding the Fourth Proportional to 425,639.68, 587,364.78 and 232,043.20

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Solution

The fourth proportional to 425,639.68, 587,364.78 and 232,043.20 is: 320,209.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,639.68 : 587,364.78 = 232,043.20 : x
  2. Step 2: Convert to fraction form
    425,639.68/587,364.78 = 232,043.20/x
  3. Step 3: Cross multiply
    425,639.68x = 587,364.78 × 232,043.20
  4. Step 4: Simplify right side
    425,639.68x = 136,294,003,118.50
  5. Step 5: Solve for x
    x = 136,294,003,118.50/425,639.68
  6. Step 6: Final answer
    x = 320,209.81

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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.