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Finding the Fourth Proportional to 48,436.80, 72,658.08 and 18,844.80

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Solution

The fourth proportional to 48,436.80, 72,658.08 and 18,844.80 is: 28,268.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,436.80 : 72,658.08 = 18,844.80 : x
  2. Step 2: Convert to fraction form
    48,436.80/72,658.08 = 18,844.80/x
  3. Step 3: Cross multiply
    48,436.80x = 72,658.08 × 18,844.80
  4. Step 4: Simplify right side
    48,436.80x = 1,369,226,985.98
  5. Step 5: Solve for x
    x = 1,369,226,985.98/48,436.80
  6. Step 6: Final answer
    x = 28,268.32

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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.