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Finding the Fourth Proportional to 58,709,860.80, 87,890,608.80 and 43,630,641.60

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Solution

The fourth proportional to 58,709,860.80, 87,890,608.80 and 43,630,641.60 is: 65,316,517.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,709,860.80 : 87,890,608.80 = 43,630,641.60 : x
  2. Step 2: Convert to fraction form
    58,709,860.80/87,890,608.80 = 43,630,641.60/x
  3. Step 3: Cross multiply
    58,709,860.80x = 87,890,608.80 × 43,630,641.60
  4. Step 4: Simplify right side
    58,709,860.80x = 3,834,723,652,558,606
  5. Step 5: Solve for x
    x = 3,834,723,652,558,606/58,709,860.80
  6. Step 6: Final answer
    x = 65,316,517.54

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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.