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Finding the Fourth Proportional to 619,782.20, 931,641.60 and 584,352.80

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Solution

The fourth proportional to 619,782.20, 931,641.60 and 584,352.80 is: 878,384.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,782.20 : 931,641.60 = 584,352.80 : x
  2. Step 2: Convert to fraction form
    619,782.20/931,641.60 = 584,352.80/x
  3. Step 3: Cross multiply
    619,782.20x = 931,641.60 × 584,352.80
  4. Step 4: Simplify right side
    619,782.20x = 544,407,377,556.48
  5. Step 5: Solve for x
    x = 544,407,377,556.48/619,782.20
  6. Step 6: Final answer
    x = 878,384.98

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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.