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Finding the Fourth Proportional to 188,572.36, 260,192.62 and 105,789.12

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Solution

The fourth proportional to 188,572.36, 260,192.62 and 105,789.12 is: 145,968.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,572.36 : 260,192.62 = 105,789.12 : x
  2. Step 2: Convert to fraction form
    188,572.36/260,192.62 = 105,789.12/x
  3. Step 3: Cross multiply
    188,572.36x = 260,192.62 × 105,789.12
  4. Step 4: Simplify right side
    188,572.36x = 27,525,548,300.29
  5. Step 5: Solve for x
    x = 27,525,548,300.29/188,572.36
  6. Step 6: Final answer
    x = 145,968.10

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1.5x scale

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.