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Finding the Fourth Proportional to 316,185.19, 474,242.85 and 79,527.96

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Solution

The fourth proportional to 316,185.19, 474,242.85 and 79,527.96 is: 119,283.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,185.19 : 474,242.85 = 79,527.96 : x
  2. Step 2: Convert to fraction form
    316,185.19/474,242.85 = 79,527.96/x
  3. Step 3: Cross multiply
    316,185.19x = 474,242.85 × 79,527.96
  4. Step 4: Simplify right side
    316,185.19x = 37,715,566,405.09
  5. Step 5: Solve for x
    x = 37,715,566,405.09/316,185.19
  6. Step 6: Final answer
    x = 119,283.15

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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.