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Finding the Fourth Proportional to 678,695.57, 936,253.45 and 433,422.51

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Solution

The fourth proportional to 678,695.57, 936,253.45 and 433,422.51 is: 597,901.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,695.57 : 936,253.45 = 433,422.51 : x
  2. Step 2: Convert to fraction form
    678,695.57/936,253.45 = 433,422.51/x
  3. Step 3: Cross multiply
    678,695.57x = 936,253.45 × 433,422.51
  4. Step 4: Simplify right side
    678,695.57x = 405,793,320,295.16
  5. Step 5: Solve for x
    x = 405,793,320,295.16/678,695.57
  6. Step 6: Final answer
    x = 597,901.83

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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.