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Finding the Fourth Proportional to 66,246.63, 91,417.72 and 36,031.91

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Solution

The fourth proportional to 66,246.63, 91,417.72 and 36,031.91 is: 49,722.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,246.63 : 91,417.72 = 36,031.91 : x
  2. Step 2: Convert to fraction form
    66,246.63/91,417.72 = 36,031.91/x
  3. Step 3: Cross multiply
    66,246.63x = 91,417.72 × 36,031.91
  4. Step 4: Simplify right side
    66,246.63x = 3,293,954,602.36
  5. Step 5: Solve for x
    x = 3,293,954,602.36/66,246.63
  6. Step 6: Final answer
    x = 49,722.60

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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.