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Finding the Fourth Proportional to 70,211.52, 105,327.16 and 22,811.42

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Solution

The fourth proportional to 70,211.52, 105,327.16 and 22,811.42 is: 34,220.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,211.52 : 105,327.16 = 22,811.42 : x
  2. Step 2: Convert to fraction form
    70,211.52/105,327.16 = 22,811.42/x
  3. Step 3: Cross multiply
    70,211.52x = 105,327.16 × 22,811.42
  4. Step 4: Simplify right side
    70,211.52x = 2,402,662,084.17
  5. Step 5: Solve for x
    x = 2,402,662,084.17/70,211.52
  6. Step 6: Final answer
    x = 34,220.34

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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.