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Finding the Fourth Proportional to 66,476.55, 91,551.02 and 65,025.03

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Solution

The fourth proportional to 66,476.55, 91,551.02 and 65,025.03 is: 89,551.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,476.55 : 91,551.02 = 65,025.03 : x
  2. Step 2: Convert to fraction form
    66,476.55/91,551.02 = 65,025.03/x
  3. Step 3: Cross multiply
    66,476.55x = 91,551.02 × 65,025.03
  4. Step 4: Simplify right side
    66,476.55x = 5,953,107,496.91
  5. Step 5: Solve for x
    x = 5,953,107,496.91/66,476.55
  6. Step 6: Final answer
    x = 89,551.99

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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.