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Finding the Fourth Proportional to 66,038.82, 91,111.41 and 37,724.46

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Solution

The fourth proportional to 66,038.82, 91,111.41 and 37,724.46 is: 52,047.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,038.82 : 91,111.41 = 37,724.46 : x
  2. Step 2: Convert to fraction form
    66,038.82/91,111.41 = 37,724.46/x
  3. Step 3: Cross multiply
    66,038.82x = 91,111.41 × 37,724.46
  4. Step 4: Simplify right side
    66,038.82x = 3,437,128,742.09
  5. Step 5: Solve for x
    x = 3,437,128,742.09/66,038.82
  6. Step 6: Final answer
    x = 52,047.10

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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.