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Finding the Fourth Proportional to 111,647.88, 154,030.44 and 63,875.64

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Solution

The fourth proportional to 111,647.88, 154,030.44 and 63,875.64 is: 88,123.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,647.88 : 154,030.44 = 63,875.64 : x
  2. Step 2: Convert to fraction form
    111,647.88/154,030.44 = 63,875.64/x
  3. Step 3: Cross multiply
    111,647.88x = 154,030.44 × 63,875.64
  4. Step 4: Simplify right side
    111,647.88x = 9,838,792,934.48
  5. Step 5: Solve for x
    x = 9,838,792,934.48/111,647.88
  6. Step 6: Final answer
    x = 88,123.42

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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.