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Finding the Fourth Proportional to 66,036.91, 91,130.63 and 35,822.25

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Solution

The fourth proportional to 66,036.91, 91,130.63 and 35,822.25 is: 49,434.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,036.91 : 91,130.63 = 35,822.25 : x
  2. Step 2: Convert to fraction form
    66,036.91/91,130.63 = 35,822.25/x
  3. Step 3: Cross multiply
    66,036.91x = 91,130.63 × 35,822.25
  4. Step 4: Simplify right side
    66,036.91x = 3,264,504,210.52
  5. Step 5: Solve for x
    x = 3,264,504,210.52/66,036.91
  6. Step 6: Final answer
    x = 49,434.54

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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.