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Finding the Fourth Proportional to 652,239.90, 978,359.85 and 605,000.70

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Solution

The fourth proportional to 652,239.90, 978,359.85 and 605,000.70 is: 907,501.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,239.90 : 978,359.85 = 605,000.70 : x
  2. Step 2: Convert to fraction form
    652,239.90/978,359.85 = 605,000.70/x
  3. Step 3: Cross multiply
    652,239.90x = 978,359.85 × 605,000.70
  4. Step 4: Simplify right side
    652,239.90x = 591,908,394,101.90
  5. Step 5: Solve for x
    x = 591,908,394,101.90/652,239.90
  6. Step 6: Final answer
    x = 907,501.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.