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Finding the Fourth Proportional to 111,093.66, 153,271.08 and 63,312.48

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Solution

The fourth proportional to 111,093.66, 153,271.08 and 63,312.48 is: 87,349.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,093.66 : 153,271.08 = 63,312.48 : x
  2. Step 2: Convert to fraction form
    111,093.66/153,271.08 = 63,312.48/x
  3. Step 3: Cross multiply
    111,093.66x = 153,271.08 × 63,312.48
  4. Step 4: Simplify right side
    111,093.66x = 9,703,972,187.08
  5. Step 5: Solve for x
    x = 9,703,972,187.08/111,093.66
  6. Step 6: Final answer
    x = 87,349.47

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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.