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Finding the Fourth Proportional to 73,543.70, 109,483.89 and 73,106.30

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Solution

The fourth proportional to 73,543.70, 109,483.89 and 73,106.30 is: 108,832.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,543.70 : 109,483.89 = 73,106.30 : x
  2. Step 2: Convert to fraction form
    73,543.70/109,483.89 = 73,106.30/x
  3. Step 3: Cross multiply
    73,543.70x = 109,483.89 × 73,106.30
  4. Step 4: Simplify right side
    73,543.70x = 8,003,961,741.98
  5. Step 5: Solve for x
    x = 8,003,961,741.98/73,543.70
  6. Step 6: Final answer
    x = 108,832.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.