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Finding the Fourth Proportional to 70,331.88, 105,420.42 and 34,740.50

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Solution

The fourth proportional to 70,331.88, 105,420.42 and 34,740.50 is: 52,072.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,331.88 : 105,420.42 = 34,740.50 : x
  2. Step 2: Convert to fraction form
    70,331.88/105,420.42 = 34,740.50/x
  3. Step 3: Cross multiply
    70,331.88x = 105,420.42 × 34,740.50
  4. Step 4: Simplify right side
    70,331.88x = 3,662,358,364.56
  5. Step 5: Solve for x
    x = 3,662,358,364.56/70,331.88
  6. Step 6: Final answer
    x = 52,072.52

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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.