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Finding the Fourth Proportional to 316,311.64, 474,418.71 and 103,079.03

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Solution

The fourth proportional to 316,311.64, 474,418.71 and 103,079.03 is: 154,602.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,311.64 : 474,418.71 = 103,079.03 : x
  2. Step 2: Convert to fraction form
    316,311.64/474,418.71 = 103,079.03/x
  3. Step 3: Cross multiply
    316,311.64x = 474,418.71 × 103,079.03
  4. Step 4: Simplify right side
    316,311.64x = 48,902,618,068.56
  5. Step 5: Solve for x
    x = 48,902,618,068.56/316,311.64
  6. Step 6: Final answer
    x = 154,602.65

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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.