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Finding the Fourth Proportional to 316,152.74, 474,253.88 and 91,516.57

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Solution

The fourth proportional to 316,152.74, 474,253.88 and 91,516.57 is: 137,282.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,152.74 : 474,253.88 = 91,516.57 : x
  2. Step 2: Convert to fraction form
    316,152.74/474,253.88 = 91,516.57/x
  3. Step 3: Cross multiply
    316,152.74x = 474,253.88 × 91,516.57
  4. Step 4: Simplify right side
    316,152.74x = 43,402,088,406.79
  5. Step 5: Solve for x
    x = 43,402,088,406.79/316,152.74
  6. Step 6: Final answer
    x = 137,282.03

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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.