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Finding the Fourth Proportional to 77,863.68, 107,477.20 and 57,714.08

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Solution

The fourth proportional to 77,863.68, 107,477.20 and 57,714.08 is: 79,664.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,863.68 : 107,477.20 = 57,714.08 : x
  2. Step 2: Convert to fraction form
    77,863.68/107,477.20 = 57,714.08/x
  3. Step 3: Cross multiply
    77,863.68x = 107,477.20 × 57,714.08
  4. Step 4: Simplify right side
    77,863.68x = 6,202,947,718.98
  5. Step 5: Solve for x
    x = 6,202,947,718.98/77,863.68
  6. Step 6: Final answer
    x = 79,664.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.