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Finding the Fourth Proportional to 111,866.75, 154,341.30 and 63,460.67

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Solution

The fourth proportional to 111,866.75, 154,341.30 and 63,460.67 is: 87,555.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,866.75 : 154,341.30 = 63,460.67 : x
  2. Step 2: Convert to fraction form
    111,866.75/154,341.30 = 63,460.67/x
  3. Step 3: Cross multiply
    111,866.75x = 154,341.30 × 63,460.67
  4. Step 4: Simplify right side
    111,866.75x = 9,794,602,692.52
  5. Step 5: Solve for x
    x = 9,794,602,692.52/111,866.75
  6. Step 6: Final answer
    x = 87,555.98

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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.