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Finding the Fourth Proportional to 189,911.50, 262,055.18 and 105,017.02

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Solution

The fourth proportional to 189,911.50, 262,055.18 and 105,017.02 is: 144,910.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,911.50 : 262,055.18 = 105,017.02 : x
  2. Step 2: Convert to fraction form
    189,911.50/262,055.18 = 105,017.02/x
  3. Step 3: Cross multiply
    189,911.50x = 262,055.18 × 105,017.02
  4. Step 4: Simplify right side
    189,911.50x = 27,520,254,079.16
  5. Step 5: Solve for x
    x = 27,520,254,079.16/189,911.50
  6. Step 6: Final answer
    x = 144,910.94

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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.