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Finding the Fourth Proportional to 188,547.26, 260,188.50 and 103,663.64

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Solution

The fourth proportional to 188,547.26, 260,188.50 and 103,663.64 is: 143,052.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,547.26 : 260,188.50 = 103,663.64 : x
  2. Step 2: Convert to fraction form
    188,547.26/260,188.50 = 103,663.64/x
  3. Step 3: Cross multiply
    188,547.26x = 260,188.50 × 103,663.64
  4. Step 4: Simplify right side
    188,547.26x = 26,972,086,996.14
  5. Step 5: Solve for x
    x = 26,972,086,996.14/188,547.26
  6. Step 6: Final answer
    x = 143,052.13

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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.