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Finding the Fourth Proportional to 612,034.90, 917,724.30 and 256,647.40

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Solution

The fourth proportional to 612,034.90, 917,724.30 and 256,647.40 is: 384,833.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,034.90 : 917,724.30 = 256,647.40 : x
  2. Step 2: Convert to fraction form
    612,034.90/917,724.30 = 256,647.40/x
  3. Step 3: Cross multiply
    612,034.90x = 917,724.30 × 256,647.40
  4. Step 4: Simplify right side
    612,034.90x = 235,531,555,511.82
  5. Step 5: Solve for x
    x = 235,531,555,511.82/612,034.90
  6. Step 6: Final answer
    x = 384,833.54

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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.