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Finding the Fourth Proportional to 119,587.52, 165,038.24 and 65,872.51

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Solution

The fourth proportional to 119,587.52, 165,038.24 and 65,872.51 is: 90,908.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,587.52 : 165,038.24 = 65,872.51 : x
  2. Step 2: Convert to fraction form
    119,587.52/165,038.24 = 65,872.51/x
  3. Step 3: Cross multiply
    119,587.52x = 165,038.24 × 65,872.51
  4. Step 4: Simplify right side
    119,587.52x = 10,871,482,866.87
  5. Step 5: Solve for x
    x = 10,871,482,866.87/119,587.52
  6. Step 6: Final answer
    x = 90,908.17

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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.