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Finding the Fourth Proportional to 70,462.85, 97,238.09 and 38,631.07

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Solution

The fourth proportional to 70,462.85, 97,238.09 and 38,631.07 is: 53,310.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,462.85 : 97,238.09 = 38,631.07 : x
  2. Step 2: Convert to fraction form
    70,462.85/97,238.09 = 38,631.07/x
  3. Step 3: Cross multiply
    70,462.85x = 97,238.09 × 38,631.07
  4. Step 4: Simplify right side
    70,462.85x = 3,756,411,314.94
  5. Step 5: Solve for x
    x = 3,756,411,314.94/70,462.85
  6. Step 6: Final answer
    x = 53,310.52

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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.