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Finding the Fourth Proportional to 580,837.60, 871,256.40 and 438,911.20

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Solution

The fourth proportional to 580,837.60, 871,256.40 and 438,911.20 is: 658,366.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,837.60 : 871,256.40 = 438,911.20 : x
  2. Step 2: Convert to fraction form
    580,837.60/871,256.40 = 438,911.20/x
  3. Step 3: Cross multiply
    580,837.60x = 871,256.40 × 438,911.20
  4. Step 4: Simplify right side
    580,837.60x = 382,404,192,031.68
  5. Step 5: Solve for x
    x = 382,404,192,031.68/580,837.60
  6. Step 6: Final answer
    x = 658,366.80

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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.