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Finding the Fourth Proportional to 70,439.78, 97,216.85 and 43,590.94

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Solution

The fourth proportional to 70,439.78, 97,216.85 and 43,590.94 is: 60,161.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,439.78 : 97,216.85 = 43,590.94 : x
  2. Step 2: Convert to fraction form
    70,439.78/97,216.85 = 43,590.94/x
  3. Step 3: Cross multiply
    70,439.78x = 97,216.85 × 43,590.94
  4. Step 4: Simplify right side
    70,439.78x = 4,237,773,741.27
  5. Step 5: Solve for x
    x = 4,237,773,741.27/70,439.78
  6. Step 6: Final answer
    x = 60,161.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.