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Finding the Fourth Proportional to 111,558.93, 153,894.28 and 71,230.29

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Solution

The fourth proportional to 111,558.93, 153,894.28 and 71,230.29 is: 98,261.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,558.93 : 153,894.28 = 71,230.29 : x
  2. Step 2: Convert to fraction form
    111,558.93/153,894.28 = 71,230.29/x
  3. Step 3: Cross multiply
    111,558.93x = 153,894.28 × 71,230.29
  4. Step 4: Simplify right side
    111,558.93x = 10,961,934,193.74
  5. Step 5: Solve for x
    x = 10,961,934,193.74/111,558.93
  6. Step 6: Final answer
    x = 98,261.38

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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.