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Finding the Fourth Proportional to 119,588.61, 165,031.52 and 65,872.38

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Solution

The fourth proportional to 119,588.61, 165,031.52 and 65,872.38 is: 90,903.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,588.61 : 165,031.52 = 65,872.38 : x
  2. Step 2: Convert to fraction form
    119,588.61/165,031.52 = 65,872.38/x
  3. Step 3: Cross multiply
    119,588.61x = 165,031.52 × 65,872.38
  4. Step 4: Simplify right side
    119,588.61x = 10,871,018,668.06
  5. Step 5: Solve for x
    x = 10,871,018,668.06/119,588.61
  6. Step 6: Final answer
    x = 90,903.46

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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.