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Finding the Fourth Proportional to 386,248.44, 532,355.82 and 256,955.64

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Solution

The fourth proportional to 386,248.44, 532,355.82 and 256,955.64 is: 354,155.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,248.44 : 532,355.82 = 256,955.64 : x
  2. Step 2: Convert to fraction form
    386,248.44/532,355.82 = 256,955.64/x
  3. Step 3: Cross multiply
    386,248.44x = 532,355.82 × 256,955.64
  4. Step 4: Simplify right side
    386,248.44x = 136,791,830,435.83
  5. Step 5: Solve for x
    x = 136,791,830,435.83/386,248.44
  6. Step 6: Final answer
    x = 354,155.04

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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.