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Finding the Fourth Proportional to 136,051.46, 187,742.71 and 75,620.06

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Solution

The fourth proportional to 136,051.46, 187,742.71 and 75,620.06 is: 104,351.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,051.46 : 187,742.71 = 75,620.06 : x
  2. Step 2: Convert to fraction form
    136,051.46/187,742.71 = 75,620.06/x
  3. Step 3: Cross multiply
    136,051.46x = 187,742.71 × 75,620.06
  4. Step 4: Simplify right side
    136,051.46x = 14,197,114,994.76
  5. Step 5: Solve for x
    x = 14,197,114,994.76/136,051.46
  6. Step 6: Final answer
    x = 104,351.07

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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.