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Finding the Fourth Proportional to 70,647.81, 97,493.94 and 38,818.59

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Solution

The fourth proportional to 70,647.81, 97,493.94 and 38,818.59 is: 53,569.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,647.81 : 97,493.94 = 38,818.59 : x
  2. Step 2: Convert to fraction form
    70,647.81/97,493.94 = 38,818.59/x
  3. Step 3: Cross multiply
    70,647.81x = 97,493.94 × 38,818.59
  4. Step 4: Simplify right side
    70,647.81x = 3,784,577,284.34
  5. Step 5: Solve for x
    x = 3,784,577,284.34/70,647.81
  6. Step 6: Final answer
    x = 53,569.63

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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.