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Finding the Fourth Proportional to 188,411.13, 260,005.50 and 103,526.37

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Solution

The fourth proportional to 188,411.13, 260,005.50 and 103,526.37 is: 142,865.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,411.13 : 260,005.50 = 103,526.37 : x
  2. Step 2: Convert to fraction form
    188,411.13/260,005.50 = 103,526.37/x
  3. Step 3: Cross multiply
    188,411.13x = 260,005.50 × 103,526.37
  4. Step 4: Simplify right side
    188,411.13x = 26,917,425,595.04
  5. Step 5: Solve for x
    x = 26,917,425,595.04/188,411.13
  6. Step 6: Final answer
    x = 142,865.37

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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.