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Finding the Fourth Proportional to 492,118.32, 679,123.28 and 265,763.82

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Solution

The fourth proportional to 492,118.32, 679,123.28 and 265,763.82 is: 366,754.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,118.32 : 679,123.28 = 265,763.82 : x
  2. Step 2: Convert to fraction form
    492,118.32/679,123.28 = 265,763.82/x
  3. Step 3: Cross multiply
    492,118.32x = 679,123.28 × 265,763.82
  4. Step 4: Simplify right side
    492,118.32x = 180,486,393,748.11
  5. Step 5: Solve for x
    x = 180,486,393,748.11/492,118.32
  6. Step 6: Final answer
    x = 366,754.07

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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.