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Finding the Fourth Proportional to 188,637.78, 260,304.60 and 111,101.34

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Solution

The fourth proportional to 188,637.78, 260,304.60 and 111,101.34 is: 153,310.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,637.78 : 260,304.60 = 111,101.34 : x
  2. Step 2: Convert to fraction form
    188,637.78/260,304.60 = 111,101.34/x
  3. Step 3: Cross multiply
    188,637.78x = 260,304.60 × 111,101.34
  4. Step 4: Simplify right side
    188,637.78x = 28,920,189,868.16
  5. Step 5: Solve for x
    x = 28,920,189,868.16/188,637.78
  6. Step 6: Final answer
    x = 153,310.70

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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.