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Finding the Fourth Proportional to 893,572.12, 1,233,142 and 485,673.84

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Solution

The fourth proportional to 893,572.12, 1,233,142 and 485,673.84 is: 670,236.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    893,572.12 : 1,233,142 = 485,673.84 : x
  2. Step 2: Convert to fraction form
    893,572.12/1,233,142 = 485,673.84/x
  3. Step 3: Cross multiply
    893,572.12x = 1,233,142 × 485,673.84
  4. Step 4: Simplify right side
    893,572.12x = 598,904,810,405.28
  5. Step 5: Solve for x
    x = 598,904,810,405.28/893,572.12
  6. Step 6: Final answer
    x = 670,236.68

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Double scale
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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.