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Finding the Fourth Proportional to 70,348.81, 97,077.63 and 38,511.58

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Solution

The fourth proportional to 70,348.81, 97,077.63 and 38,511.58 is: 53,143.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,348.81 : 97,077.63 = 38,511.58 : x
  2. Step 2: Convert to fraction form
    70,348.81/97,077.63 = 38,511.58/x
  3. Step 3: Cross multiply
    70,348.81x = 97,077.63 × 38,511.58
  4. Step 4: Simplify right side
    70,348.81x = 3,738,612,913.96
  5. Step 5: Solve for x
    x = 3,738,612,913.96/70,348.81
  6. Step 6: Final answer
    x = 53,143.94

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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.