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Finding the Fourth Proportional to 445,953.39, 615,416.09 and 254,970.78

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Solution

The fourth proportional to 445,953.39, 615,416.09 and 254,970.78 is: 351,859.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,953.39 : 615,416.09 = 254,970.78 : x
  2. Step 2: Convert to fraction form
    445,953.39/615,416.09 = 254,970.78/x
  3. Step 3: Cross multiply
    445,953.39x = 615,416.09 × 254,970.78
  4. Step 4: Simplify right side
    445,953.39x = 156,913,119,217.00
  5. Step 5: Solve for x
    x = 156,913,119,217.00/445,953.39
  6. Step 6: Final answer
    x = 351,859.91

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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.