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Finding the Fourth Proportional to 92,970.20, 139,601.10 and 53,604.20

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Solution

The fourth proportional to 92,970.20, 139,601.10 and 53,604.20 is: 80,490.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,970.20 : 139,601.10 = 53,604.20 : x
  2. Step 2: Convert to fraction form
    92,970.20/139,601.10 = 53,604.20/x
  3. Step 3: Cross multiply
    92,970.20x = 139,601.10 × 53,604.20
  4. Step 4: Simplify right side
    92,970.20x = 7,483,205,284.62
  5. Step 5: Solve for x
    x = 7,483,205,284.62/92,970.20
  6. Step 6: Final answer
    x = 80,490.36

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1.5x scale

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.