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Finding the Fourth Proportional to 105,590.70, 158,369.54 and 34,512.80

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Solution

The fourth proportional to 105,590.70, 158,369.54 and 34,512.80 is: 51,763.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,590.70 : 158,369.54 = 34,512.80 : x
  2. Step 2: Convert to fraction form
    105,590.70/158,369.54 = 34,512.80/x
  3. Step 3: Cross multiply
    105,590.70x = 158,369.54 × 34,512.80
  4. Step 4: Simplify right side
    105,590.70x = 5,465,776,260.11
  5. Step 5: Solve for x
    x = 5,465,776,260.11/105,590.70
  6. Step 6: Final answer
    x = 51,763.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.