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Finding the Fourth Proportional to 899,192, 1,240,920.60 and 517,218.32

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Solution

The fourth proportional to 899,192, 1,240,920.60 and 517,218.32 is: 713,781.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,192 : 1,240,920.60 = 517,218.32 : x
  2. Step 2: Convert to fraction form
    899,192/1,240,920.60 = 517,218.32/x
  3. Step 3: Cross multiply
    899,192x = 1,240,920.60 × 517,218.32
  4. Step 4: Simplify right side
    899,192x = 641,826,867,985.39
  5. Step 5: Solve for x
    x = 641,826,867,985.39/899,192
  6. Step 6: Final answer
    x = 713,781.78

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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.