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Finding the Fourth Proportional to 387,407.64, 534,665.90 and 234,530.13

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Solution

The fourth proportional to 387,407.64, 534,665.90 and 234,530.13 is: 323,677.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,407.64 : 534,665.90 = 234,530.13 : x
  2. Step 2: Convert to fraction form
    387,407.64/534,665.90 = 234,530.13/x
  3. Step 3: Cross multiply
    387,407.64x = 534,665.90 × 234,530.13
  4. Step 4: Simplify right side
    387,407.64x = 125,395,263,033.57
  5. Step 5: Solve for x
    x = 125,395,263,033.57/387,407.64
  6. Step 6: Final answer
    x = 323,677.83

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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.