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Finding the Fourth Proportional to 316,243.17, 474,411.63 and 91,575.55

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Solution

The fourth proportional to 316,243.17, 474,411.63 and 91,575.55 is: 137,376.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,243.17 : 474,411.63 = 91,575.55 : x
  2. Step 2: Convert to fraction form
    316,243.17/474,411.63 = 91,575.55/x
  3. Step 3: Cross multiply
    316,243.17x = 474,411.63 × 91,575.55
  4. Step 4: Simplify right side
    316,243.17x = 43,444,505,943.65
  5. Step 5: Solve for x
    x = 43,444,505,943.65/316,243.17
  6. Step 6: Final answer
    x = 137,376.90

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1.5x scale

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.