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Finding the Fourth Proportional to 153,485.82, 211,754.25 and 93,012.84

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Solution

The fourth proportional to 153,485.82, 211,754.25 and 93,012.84 is: 128,323.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,485.82 : 211,754.25 = 93,012.84 : x
  2. Step 2: Convert to fraction form
    153,485.82/211,754.25 = 93,012.84/x
  3. Step 3: Cross multiply
    153,485.82x = 211,754.25 × 93,012.84
  4. Step 4: Simplify right side
    153,485.82x = 19,695,864,174.57
  5. Step 5: Solve for x
    x = 19,695,864,174.57/153,485.82
  6. Step 6: Final answer
    x = 128,323.67

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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.