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Finding the Fourth Proportional to 70,657.90, 105,970.26 and 26,305.54

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Solution

The fourth proportional to 70,657.90, 105,970.26 and 26,305.54 is: 39,452.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,657.90 : 105,970.26 = 26,305.54 : x
  2. Step 2: Convert to fraction form
    70,657.90/105,970.26 = 26,305.54/x
  3. Step 3: Cross multiply
    70,657.90x = 105,970.26 × 26,305.54
  4. Step 4: Simplify right side
    70,657.90x = 2,787,604,913.24
  5. Step 5: Solve for x
    x = 2,787,604,913.24/70,657.90
  6. Step 6: Final answer
    x = 39,452.13

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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.