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Finding the Fourth Proportional to 42,809,968.80, 64,319,810.80 and 32,193,136.80

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Solution

The fourth proportional to 42,809,968.80, 64,319,810.80 and 32,193,136.80 is: 48,368,558.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,809,968.80 : 64,319,810.80 = 32,193,136.80 : x
  2. Step 2: Convert to fraction form
    42,809,968.80/64,319,810.80 = 32,193,136.80/x
  3. Step 3: Cross multiply
    42,809,968.80x = 64,319,810.80 × 32,193,136.80
  4. Step 4: Simplify right side
    42,809,968.80x = 2,070,656,468,034,517.50
  5. Step 5: Solve for x
    x = 2,070,656,468,034,517.50/42,809,968.80
  6. Step 6: Final answer
    x = 48,368,558.21

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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.