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Finding the Fourth Proportional to 521,305.25, 719,187.41 and 317,192.54

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Solution

The fourth proportional to 521,305.25, 719,187.41 and 317,192.54 is: 437,595.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,305.25 : 719,187.41 = 317,192.54 : x
  2. Step 2: Convert to fraction form
    521,305.25/719,187.41 = 317,192.54/x
  3. Step 3: Cross multiply
    521,305.25x = 719,187.41 × 317,192.54
  4. Step 4: Simplify right side
    521,305.25x = 228,120,878,510.97
  5. Step 5: Solve for x
    x = 228,120,878,510.97/521,305.25
  6. Step 6: Final answer
    x = 437,595.59

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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.