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Finding the Fourth Proportional to 581,514.51, 871,381.48 and 391,270.22

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Solution

The fourth proportional to 581,514.51, 871,381.48 and 391,270.22 is: 586,306.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,514.51 : 871,381.48 = 391,270.22 : x
  2. Step 2: Convert to fraction form
    581,514.51/871,381.48 = 391,270.22/x
  3. Step 3: Cross multiply
    581,514.51x = 871,381.48 × 391,270.22
  4. Step 4: Simplify right side
    581,514.51x = 340,945,623,383.53
  5. Step 5: Solve for x
    x = 340,945,623,383.53/581,514.51
  6. Step 6: Final answer
    x = 586,306.30

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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.