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Finding the Fourth Proportional to 104,689.66, 144,474.70 and 56,946.06

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Solution

The fourth proportional to 104,689.66, 144,474.70 and 56,946.06 is: 78,587.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,689.66 : 144,474.70 = 56,946.06 : x
  2. Step 2: Convert to fraction form
    104,689.66/144,474.70 = 56,946.06/x
  3. Step 3: Cross multiply
    104,689.66x = 144,474.70 × 56,946.06
  4. Step 4: Simplify right side
    104,689.66x = 8,227,264,934.68
  5. Step 5: Solve for x
    x = 8,227,264,934.68/104,689.66
  6. Step 6: Final answer
    x = 78,587.18

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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.