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Finding the Fourth Proportional to 78,804,582.80, 118,206,874.22 and 48,571,494.80

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Solution

The fourth proportional to 78,804,582.80, 118,206,874.22 and 48,571,494.80 is: 72,857,242.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,804,582.80 : 118,206,874.22 = 48,571,494.80 : x
  2. Step 2: Convert to fraction form
    78,804,582.80/118,206,874.22 = 48,571,494.80/x
  3. Step 3: Cross multiply
    78,804,582.80x = 118,206,874.22 × 48,571,494.80
  4. Step 4: Simplify right side
    78,804,582.80x = 5,741,484,576,500,984
  5. Step 5: Solve for x
    x = 5,741,484,576,500,984/78,804,582.80
  6. Step 6: Final answer
    x = 72,857,242.21

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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.