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Finding the Fourth Proportional to 210,635.22, 315,952.85 and 70,393.84

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Solution

The fourth proportional to 210,635.22, 315,952.85 and 70,393.84 is: 105,590.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,635.22 : 315,952.85 = 70,393.84 : x
  2. Step 2: Convert to fraction form
    210,635.22/315,952.85 = 70,393.84/x
  3. Step 3: Cross multiply
    210,635.22x = 315,952.85 × 70,393.84
  4. Step 4: Simplify right side
    210,635.22x = 22,241,134,370.44
  5. Step 5: Solve for x
    x = 22,241,134,370.44/210,635.22
  6. Step 6: Final answer
    x = 105,590.77

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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.