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Finding the Fourth Proportional to 188,920.83, 260,712.51 and 104,038.50

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Solution

The fourth proportional to 188,920.83, 260,712.51 and 104,038.50 is: 143,574.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,920.83 : 260,712.51 = 104,038.50 : x
  2. Step 2: Convert to fraction form
    188,920.83/260,712.51 = 104,038.50/x
  3. Step 3: Cross multiply
    188,920.83x = 260,712.51 × 104,038.50
  4. Step 4: Simplify right side
    188,920.83x = 27,124,138,471.64
  5. Step 5: Solve for x
    x = 27,124,138,471.64/188,920.83
  6. Step 6: Final answer
    x = 143,574.10

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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.