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Finding the Fourth Proportional to 612,043.56, 917,129.99 and 256,863.83

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Solution

The fourth proportional to 612,043.56, 917,129.99 and 256,863.83 is: 384,903.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,043.56 : 917,129.99 = 256,863.83 : x
  2. Step 2: Convert to fraction form
    612,043.56/917,129.99 = 256,863.83/x
  3. Step 3: Cross multiply
    612,043.56x = 917,129.99 × 256,863.83
  4. Step 4: Simplify right side
    612,043.56x = 235,577,517,895.77
  5. Step 5: Solve for x
    x = 235,577,517,895.77/612,043.56
  6. Step 6: Final answer
    x = 384,903.19

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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.