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Finding the Fourth Proportional to 70,558.91, 97,354.54 and 39,932.40

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Solution

The fourth proportional to 70,558.91, 97,354.54 and 39,932.40 is: 55,097.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,558.91 : 97,354.54 = 39,932.40 : x
  2. Step 2: Convert to fraction form
    70,558.91/97,354.54 = 39,932.40/x
  3. Step 3: Cross multiply
    70,558.91x = 97,354.54 × 39,932.40
  4. Step 4: Simplify right side
    70,558.91x = 3,887,600,433.10
  5. Step 5: Solve for x
    x = 3,887,600,433.10/70,558.91
  6. Step 6: Final answer
    x = 55,097.23

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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.