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Finding the Fourth Proportional to 70,644.48, 97,489.95 and 38,813.91

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Solution

The fourth proportional to 70,644.48, 97,489.95 and 38,813.91 is: 53,563.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,644.48 : 97,489.95 = 38,813.91 : x
  2. Step 2: Convert to fraction form
    70,644.48/97,489.95 = 38,813.91/x
  3. Step 3: Cross multiply
    70,644.48x = 97,489.95 × 38,813.91
  4. Step 4: Simplify right side
    70,644.48x = 3,783,966,145.20
  5. Step 5: Solve for x
    x = 3,783,966,145.20/70,644.48
  6. Step 6: Final answer
    x = 53,563.51

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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.