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Finding the Fourth Proportional to 316,492.80, 474,754.50 and 103,260.30

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Solution

The fourth proportional to 316,492.80, 474,754.50 and 103,260.30 is: 154,895.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,492.80 : 474,754.50 = 103,260.30 : x
  2. Step 2: Convert to fraction form
    316,492.80/474,754.50 = 103,260.30/x
  3. Step 3: Cross multiply
    316,492.80x = 474,754.50 × 103,260.30
  4. Step 4: Simplify right side
    316,492.80x = 49,023,292,096.35
  5. Step 5: Solve for x
    x = 49,023,292,096.35/316,492.80
  6. Step 6: Final answer
    x = 154,895.44

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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.