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Finding the Fourth Proportional to 445,956.39, 615,420.23 and 254,973.78

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Solution

The fourth proportional to 445,956.39, 615,420.23 and 254,973.78 is: 351,864.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,956.39 : 615,420.23 = 254,973.78 : x
  2. Step 2: Convert to fraction form
    445,956.39/615,420.23 = 254,973.78/x
  3. Step 3: Cross multiply
    445,956.39x = 615,420.23 × 254,973.78
  4. Step 4: Simplify right side
    445,956.39x = 156,916,021,056.70
  5. Step 5: Solve for x
    x = 156,916,021,056.70/445,956.39
  6. Step 6: Final answer
    x = 351,864.05

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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.