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Finding the Fourth Proportional to 104,521.68, 144,312.84 and 80,282.16

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Solution

The fourth proportional to 104,521.68, 144,312.84 and 80,282.16 is: 110,845.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,521.68 : 144,312.84 = 80,282.16 : x
  2. Step 2: Convert to fraction form
    104,521.68/144,312.84 = 80,282.16/x
  3. Step 3: Cross multiply
    104,521.68x = 144,312.84 × 80,282.16
  4. Step 4: Simplify right side
    104,521.68x = 11,585,746,510.93
  5. Step 5: Solve for x
    x = 11,585,746,510.93/104,521.68
  6. Step 6: Final answer
    x = 110,845.39

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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.