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Finding the Fourth Proportional to 623,017.92, 859,765.12 and 336,538

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Solution

The fourth proportional to 623,017.92, 859,765.12 and 336,538 is: 464,422.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,017.92 : 859,765.12 = 336,538 : x
  2. Step 2: Convert to fraction form
    623,017.92/859,765.12 = 336,538/x
  3. Step 3: Cross multiply
    623,017.92x = 859,765.12 × 336,538
  4. Step 4: Simplify right side
    623,017.92x = 289,343,633,954.56
  5. Step 5: Solve for x
    x = 289,343,633,954.56/623,017.92
  6. Step 6: Final answer
    x = 464,422.65

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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.