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Finding the Fourth Proportional to 70,729.96, 97,603.50 and 38,893.72

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Solution

The fourth proportional to 70,729.96, 97,603.50 and 38,893.72 is: 53,671.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,729.96 : 97,603.50 = 38,893.72 : x
  2. Step 2: Convert to fraction form
    70,729.96/97,603.50 = 38,893.72/x
  3. Step 3: Cross multiply
    70,729.96x = 97,603.50 × 38,893.72
  4. Step 4: Simplify right side
    70,729.96x = 3,796,163,200.02
  5. Step 5: Solve for x
    x = 3,796,163,200.02/70,729.96
  6. Step 6: Final answer
    x = 53,671.22

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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.