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Finding the Fourth Proportional to 189,804.66, 261,920.15 and 104,916.25

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Solution

The fourth proportional to 189,804.66, 261,920.15 and 104,916.25 is: 144,778.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,804.66 : 261,920.15 = 104,916.25 : x
  2. Step 2: Convert to fraction form
    189,804.66/261,920.15 = 104,916.25/x
  3. Step 3: Cross multiply
    189,804.66x = 261,920.15 × 104,916.25
  4. Step 4: Simplify right side
    189,804.66x = 27,479,679,412.86
  5. Step 5: Solve for x
    x = 27,479,679,412.86/189,804.66
  6. Step 6: Final answer
    x = 144,778.74

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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.