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Finding the Fourth Proportional to 403,789.68, 557,222.76 and 234,039.60

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Solution

The fourth proportional to 403,789.68, 557,222.76 and 234,039.60 is: 322,970.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,789.68 : 557,222.76 = 234,039.60 : x
  2. Step 2: Convert to fraction form
    403,789.68/557,222.76 = 234,039.60/x
  3. Step 3: Cross multiply
    403,789.68x = 557,222.76 × 234,039.60
  4. Step 4: Simplify right side
    403,789.68x = 130,412,191,861.30
  5. Step 5: Solve for x
    x = 130,412,191,861.30/403,789.68
  6. Step 6: Final answer
    x = 322,970.59

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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.