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Finding the Fourth Proportional to 211,775.74, 317,702.96 and 69,628.97

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Solution

The fourth proportional to 211,775.74, 317,702.96 and 69,628.97 is: 104,456.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,775.74 : 317,702.96 = 69,628.97 : x
  2. Step 2: Convert to fraction form
    211,775.74/317,702.96 = 69,628.97/x
  3. Step 3: Cross multiply
    211,775.74x = 317,702.96 × 69,628.97
  4. Step 4: Simplify right side
    211,775.74x = 22,121,330,577.97
  5. Step 5: Solve for x
    x = 22,121,330,577.97/211,775.74
  6. Step 6: Final answer
    x = 104,456.40

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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.