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Finding the Fourth Proportional to 445,998.72, 615,989.06 and 293,717.61

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Solution

The fourth proportional to 445,998.72, 615,989.06 and 293,717.61 is: 405,666.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,998.72 : 615,989.06 = 293,717.61 : x
  2. Step 2: Convert to fraction form
    445,998.72/615,989.06 = 293,717.61/x
  3. Step 3: Cross multiply
    445,998.72x = 615,989.06 × 293,717.61
  4. Step 4: Simplify right side
    445,998.72x = 180,926,833,020.76
  5. Step 5: Solve for x
    x = 180,926,833,020.76/445,998.72
  6. Step 6: Final answer
    x = 405,666.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.