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Finding the Fourth Proportional to 445,999.47, 615,990.11 and 293,718.38

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Solution

The fourth proportional to 445,999.47, 615,990.11 and 293,718.38 is: 405,667.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,999.47 : 615,990.11 = 293,718.38 : x
  2. Step 2: Convert to fraction form
    445,999.47/615,990.11 = 293,718.38/x
  3. Step 3: Cross multiply
    445,999.47x = 615,990.11 × 293,718.38
  4. Step 4: Simplify right side
    445,999.47x = 180,927,612,656.68
  5. Step 5: Solve for x
    x = 180,927,612,656.68/445,999.47
  6. Step 6: Final answer
    x = 405,667.78

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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.