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Finding the Fourth Proportional to 189,703.59, 261,782.55 and 104,818.83

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Solution

The fourth proportional to 189,703.59, 261,782.55 and 104,818.83 is: 144,645.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,703.59 : 261,782.55 = 104,818.83 : x
  2. Step 2: Convert to fraction form
    189,703.59/261,782.55 = 104,818.83/x
  3. Step 3: Cross multiply
    189,703.59x = 261,782.55 × 104,818.83
  4. Step 4: Simplify right side
    189,703.59x = 27,439,740,605.42
  5. Step 5: Solve for x
    x = 27,439,740,605.42/189,703.59
  6. Step 6: Final answer
    x = 144,645.34

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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.