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Finding the Fourth Proportional to 189,687.51, 261,774.05 and 104,810.04

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Solution

The fourth proportional to 189,687.51, 261,774.05 and 104,810.04 is: 144,640.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,687.51 : 261,774.05 = 104,810.04 : x
  2. Step 2: Convert to fraction form
    189,687.51/261,774.05 = 104,810.04/x
  3. Step 3: Cross multiply
    189,687.51x = 261,774.05 × 104,810.04
  4. Step 4: Simplify right side
    189,687.51x = 27,436,548,127.41
  5. Step 5: Solve for x
    x = 27,436,548,127.41/189,687.51
  6. Step 6: Final answer
    x = 144,640.77

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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.