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Finding the Fourth Proportional to 387,116.68, 534,086.10 and 243,889.48

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Solution

The fourth proportional to 387,116.68, 534,086.10 and 243,889.48 is: 336,482.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,116.68 : 534,086.10 = 243,889.48 : x
  2. Step 2: Convert to fraction form
    387,116.68/534,086.10 = 243,889.48/x
  3. Step 3: Cross multiply
    387,116.68x = 534,086.10 × 243,889.48
  4. Step 4: Simplify right side
    387,116.68x = 130,257,981,204.23
  5. Step 5: Solve for x
    x = 130,257,981,204.23/387,116.68
  6. Step 6: Final answer
    x = 336,482.48

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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.