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Finding the Fourth Proportional to 73,878.90, 103,692.90 and 73,878.90

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Solution

The fourth proportional to 73,878.90, 103,692.90 and 73,878.90 is: 103,692.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,878.90 : 103,692.90 = 73,878.90 : x
  2. Step 2: Convert to fraction form
    73,878.90/103,692.90 = 73,878.90/x
  3. Step 3: Cross multiply
    73,878.90x = 103,692.90 × 73,878.90
  4. Step 4: Simplify right side
    73,878.90x = 7,660,717,389.81
  5. Step 5: Solve for x
    x = 7,660,717,389.81/73,878.90
  6. Step 6: Final answer
    x = 103,692.90

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.