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Finding the Fourth Proportional to 675,091.36, 931,187.01 and 432,990.46

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Solution

The fourth proportional to 675,091.36, 931,187.01 and 432,990.46 is: 597,245.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,091.36 : 931,187.01 = 432,990.46 : x
  2. Step 2: Convert to fraction form
    675,091.36/931,187.01 = 432,990.46/x
  3. Step 3: Cross multiply
    675,091.36x = 931,187.01 × 432,990.46
  4. Step 4: Simplify right side
    675,091.36x = 403,195,091,805.93
  5. Step 5: Solve for x
    x = 403,195,091,805.93/675,091.36
  6. Step 6: Final answer
    x = 597,245.23

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Double scale
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Similar ratio
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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.