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Finding the Fourth Proportional to 201,695.76, 278,346.78 and 111,058.38

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Solution

The fourth proportional to 201,695.76, 278,346.78 and 111,058.38 is: 153,264.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,695.76 : 278,346.78 = 111,058.38 : x
  2. Step 2: Convert to fraction form
    201,695.76/278,346.78 = 111,058.38/x
  3. Step 3: Cross multiply
    201,695.76x = 278,346.78 × 111,058.38
  4. Step 4: Simplify right side
    201,695.76x = 30,912,742,465.02
  5. Step 5: Solve for x
    x = 30,912,742,465.02/201,695.76
  6. Step 6: Final answer
    x = 153,264.22

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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.