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Finding the Fourth Proportional to 343,859.32, 515,626.30 and 127,647.01

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Solution

The fourth proportional to 343,859.32, 515,626.30 and 127,647.01 is: 191,410.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,859.32 : 515,626.30 = 127,647.01 : x
  2. Step 2: Convert to fraction form
    343,859.32/515,626.30 = 127,647.01/x
  3. Step 3: Cross multiply
    343,859.32x = 515,626.30 × 127,647.01
  4. Step 4: Simplify right side
    343,859.32x = 65,818,155,472.36
  5. Step 5: Solve for x
    x = 65,818,155,472.36/343,859.32
  6. Step 6: Final answer
    x = 191,410.13

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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.