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Finding the Fourth Proportional to 719,058.86, 992,300.06 and 396,768.71

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Solution

The fourth proportional to 719,058.86, 992,300.06 and 396,768.71 is: 547,540.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,058.86 : 992,300.06 = 396,768.71 : x
  2. Step 2: Convert to fraction form
    719,058.86/992,300.06 = 396,768.71/x
  3. Step 3: Cross multiply
    719,058.86x = 992,300.06 × 396,768.71
  4. Step 4: Simplify right side
    719,058.86x = 393,713,607,793.78
  5. Step 5: Solve for x
    x = 393,713,607,793.78/719,058.86
  6. Step 6: Final answer
    x = 547,540.17

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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.