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Finding the Fourth Proportional to 66,505.40, 91,814.81 and 46,117.02

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Solution

The fourth proportional to 66,505.40, 91,814.81 and 46,117.02 is: 63,667.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,505.40 : 91,814.81 = 46,117.02 : x
  2. Step 2: Convert to fraction form
    66,505.40/91,814.81 = 46,117.02/x
  3. Step 3: Cross multiply
    66,505.40x = 91,814.81 × 46,117.02
  4. Step 4: Simplify right side
    66,505.40x = 4,234,225,198.48
  5. Step 5: Solve for x
    x = 4,234,225,198.48/66,505.40
  6. Step 6: Final answer
    x = 63,667.39

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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.