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Finding the Fourth Proportional to 616,641.18, 851,102.01 and 374,872.50

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Solution

The fourth proportional to 616,641.18, 851,102.01 and 374,872.50 is: 517,407.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,641.18 : 851,102.01 = 374,872.50 : x
  2. Step 2: Convert to fraction form
    616,641.18/851,102.01 = 374,872.50/x
  3. Step 3: Cross multiply
    616,641.18x = 851,102.01 × 374,872.50
  4. Step 4: Simplify right side
    616,641.18x = 319,054,738,243.73
  5. Step 5: Solve for x
    x = 319,054,738,243.73/616,641.18
  6. Step 6: Final answer
    x = 517,407.45

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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.