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Finding the Fourth Proportional to 616,113.30, 923,770.35 and 261,030.90

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Solution

The fourth proportional to 616,113.30, 923,770.35 and 261,030.90 is: 391,377.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,113.30 : 923,770.35 = 261,030.90 : x
  2. Step 2: Convert to fraction form
    616,113.30/923,770.35 = 261,030.90/x
  3. Step 3: Cross multiply
    616,113.30x = 923,770.35 × 261,030.90
  4. Step 4: Simplify right side
    616,113.30x = 241,132,605,853.82
  5. Step 5: Solve for x
    x = 241,132,605,853.82/616,113.30
  6. Step 6: Final answer
    x = 391,377.05

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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.