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Finding the Fourth Proportional to 343,806.88, 515,410.80 and 277,129.12

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Solution

The fourth proportional to 343,806.88, 515,410.80 and 277,129.12 is: 415,452.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,806.88 : 515,410.80 = 277,129.12 : x
  2. Step 2: Convert to fraction form
    343,806.88/515,410.80 = 277,129.12/x
  3. Step 3: Cross multiply
    343,806.88x = 515,410.80 × 277,129.12
  4. Step 4: Simplify right side
    343,806.88x = 142,835,341,442.50
  5. Step 5: Solve for x
    x = 142,835,341,442.50/343,806.88
  6. Step 6: Final answer
    x = 415,452.25

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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.