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Finding the Fourth Proportional to 66,045.41, 91,178.03 and 50,904.89

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Solution

The fourth proportional to 66,045.41, 91,178.03 and 50,904.89 is: 70,276.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,045.41 : 91,178.03 = 50,904.89 : x
  2. Step 2: Convert to fraction form
    66,045.41/91,178.03 = 50,904.89/x
  3. Step 3: Cross multiply
    66,045.41x = 91,178.03 × 50,904.89
  4. Step 4: Simplify right side
    66,045.41x = 4,641,407,587.57
  5. Step 5: Solve for x
    x = 4,641,407,587.57/66,045.41
  6. Step 6: Final answer
    x = 70,276.01

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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.