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Finding the Fourth Proportional to 468,575.46, 646,150.86 and 400,816.76

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Solution

The fourth proportional to 468,575.46, 646,150.86 and 400,816.76 is: 552,713.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,575.46 : 646,150.86 = 400,816.76 : x
  2. Step 2: Convert to fraction form
    468,575.46/646,150.86 = 400,816.76/x
  3. Step 3: Cross multiply
    468,575.46x = 646,150.86 × 400,816.76
  4. Step 4: Simplify right side
    468,575.46x = 258,988,090,945.66
  5. Step 5: Solve for x
    x = 258,988,090,945.66/468,575.46
  6. Step 6: Final answer
    x = 552,713.73

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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.