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Finding the Fourth Proportional to 518,596.34, 777,886.79 and 316,251.90

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Solution

The fourth proportional to 518,596.34, 777,886.79 and 316,251.90 is: 474,373.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,596.34 : 777,886.79 = 316,251.90 : x
  2. Step 2: Convert to fraction form
    518,596.34/777,886.79 = 316,251.90/x
  3. Step 3: Cross multiply
    518,596.34x = 777,886.79 × 316,251.90
  4. Step 4: Simplify right side
    518,596.34x = 246,008,173,741.14
  5. Step 5: Solve for x
    x = 246,008,173,741.14/518,596.34
  6. Step 6: Final answer
    x = 474,373.14

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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.