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Finding the Fourth Proportional to 66,931.16, 92,365.71 and 36,716.54

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Solution

The fourth proportional to 66,931.16, 92,365.71 and 36,716.54 is: 50,669.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,931.16 : 92,365.71 = 36,716.54 : x
  2. Step 2: Convert to fraction form
    66,931.16/92,365.71 = 36,716.54/x
  3. Step 3: Cross multiply
    66,931.16x = 92,365.71 × 36,716.54
  4. Step 4: Simplify right side
    66,931.16x = 3,391,349,239.23
  5. Step 5: Solve for x
    x = 3,391,349,239.23/66,931.16
  6. Step 6: Final answer
    x = 50,669.21

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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.