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Finding the Fourth Proportional to 104,685.84, 144,462.28 and 56,939.16

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Solution

The fourth proportional to 104,685.84, 144,462.28 and 56,939.16 is: 78,573.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,685.84 : 144,462.28 = 56,939.16 : x
  2. Step 2: Convert to fraction form
    104,685.84/144,462.28 = 56,939.16/x
  3. Step 3: Cross multiply
    104,685.84x = 144,462.28 × 56,939.16
  4. Step 4: Simplify right side
    104,685.84x = 8,225,560,874.88
  5. Step 5: Solve for x
    x = 8,225,560,874.88/104,685.84
  6. Step 6: Final answer
    x = 78,573.77

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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.