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Finding the Fourth Proportional to 173,890.80, 243,972 and 173,890.80

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Solution

The fourth proportional to 173,890.80, 243,972 and 173,890.80 is: 243,972

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,890.80 : 243,972 = 173,890.80 : x
  2. Step 2: Convert to fraction form
    173,890.80/243,972 = 173,890.80/x
  3. Step 3: Cross multiply
    173,890.80x = 243,972 × 173,890.80
  4. Step 4: Simplify right side
    173,890.80x = 42,424,486,257.60
  5. Step 5: Solve for x
    x = 42,424,486,257.60/173,890.80
  6. Step 6: Final answer
    x = 243,972

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1.5x scale

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.