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Finding the Fourth Proportional to 73,872,543.80, 110,808,815.70 and 43,261,542.20

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Solution

The fourth proportional to 73,872,543.80, 110,808,815.70 and 43,261,542.20 is: 64,892,313.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,872,543.80 : 110,808,815.70 = 43,261,542.20 : x
  2. Step 2: Convert to fraction form
    73,872,543.80/110,808,815.70 = 43,261,542.20/x
  3. Step 3: Cross multiply
    73,872,543.80x = 110,808,815.70 × 43,261,542.20
  4. Step 4: Simplify right side
    73,872,543.80x = 4,793,760,256,537,573
  5. Step 5: Solve for x
    x = 4,793,760,256,537,573/73,872,543.80
  6. Step 6: Final answer
    x = 64,892,313.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.