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Finding the Fourth Proportional to 70,379.08, 97,086.80 and 47,710.42

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Solution

The fourth proportional to 70,379.08, 97,086.80 and 47,710.42 is: 65,815.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,379.08 : 97,086.80 = 47,710.42 : x
  2. Step 2: Convert to fraction form
    70,379.08/97,086.80 = 47,710.42/x
  3. Step 3: Cross multiply
    70,379.08x = 97,086.80 × 47,710.42
  4. Step 4: Simplify right side
    70,379.08x = 4,632,051,881.02
  5. Step 5: Solve for x
    x = 4,632,051,881.02/70,379.08
  6. Step 6: Final answer
    x = 65,815.75

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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.