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Finding the Fourth Proportional to 706,758.40, 972,864.31 and 615,958.26

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Solution

The fourth proportional to 706,758.40, 972,864.31 and 615,958.26 is: 847,876.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,758.40 : 972,864.31 = 615,958.26 : x
  2. Step 2: Convert to fraction form
    706,758.40/972,864.31 = 615,958.26/x
  3. Step 3: Cross multiply
    706,758.40x = 972,864.31 × 615,958.26
  4. Step 4: Simplify right side
    706,758.40x = 599,243,807,603.70
  5. Step 5: Solve for x
    x = 599,243,807,603.70/706,758.40
  6. Step 6: Final answer
    x = 847,876.46

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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.