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Finding the Fourth Proportional to 583,412.75, 875,119.13 and 189,428.75

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Solution

The fourth proportional to 583,412.75, 875,119.13 and 189,428.75 is: 284,143.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,412.75 : 875,119.13 = 189,428.75 : x
  2. Step 2: Convert to fraction form
    583,412.75/875,119.13 = 189,428.75/x
  3. Step 3: Cross multiply
    583,412.75x = 875,119.13 × 189,428.75
  4. Step 4: Simplify right side
    583,412.75x = 165,772,721,949.84
  5. Step 5: Solve for x
    x = 165,772,721,949.84/583,412.75
  6. Step 6: Final answer
    x = 284,143.13

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.