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Finding the Fourth Proportional to 111,477.66, 153,828.99 and 66,147.84

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Solution

The fourth proportional to 111,477.66, 153,828.99 and 66,147.84 is: 91,277.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,477.66 : 153,828.99 = 66,147.84 : x
  2. Step 2: Convert to fraction form
    111,477.66/153,828.99 = 66,147.84/x
  3. Step 3: Cross multiply
    111,477.66x = 153,828.99 × 66,147.84
  4. Step 4: Simplify right side
    111,477.66x = 10,175,455,417.88
  5. Step 5: Solve for x
    x = 10,175,455,417.88/111,477.66
  6. Step 6: Final answer
    x = 91,277.98

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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.