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Finding the Fourth Proportional to 70,142.48, 96,795.08 and 38,311.48

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Solution

The fourth proportional to 70,142.48, 96,795.08 and 38,311.48 is: 52,869.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,142.48 : 96,795.08 = 38,311.48 : x
  2. Step 2: Convert to fraction form
    70,142.48/96,795.08 = 38,311.48/x
  3. Step 3: Cross multiply
    70,142.48x = 96,795.08 × 38,311.48
  4. Step 4: Simplify right side
    70,142.48x = 3,708,362,771.52
  5. Step 5: Solve for x
    x = 3,708,362,771.52/70,142.48
  6. Step 6: Final answer
    x = 52,869.00

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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.