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Finding the Fourth Proportional to 611,335.68, 916,708.58 and 256,254.36

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Solution

The fourth proportional to 611,335.68, 916,708.58 and 256,254.36 is: 384,257.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,335.68 : 916,708.58 = 256,254.36 : x
  2. Step 2: Convert to fraction form
    611,335.68/916,708.58 = 256,254.36/x
  3. Step 3: Cross multiply
    611,335.68x = 916,708.58 × 256,254.36
  4. Step 4: Simplify right side
    611,335.68x = 234,910,570,474.41
  5. Step 5: Solve for x
    x = 234,910,570,474.41/611,335.68
  6. Step 6: Final answer
    x = 384,257.91

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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.