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Finding the Fourth Proportional to 73,485.38, 109,728.98 and 71,492.48

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Solution

The fourth proportional to 73,485.38, 109,728.98 and 71,492.48 is: 106,753.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,485.38 : 109,728.98 = 71,492.48 : x
  2. Step 2: Convert to fraction form
    73,485.38/109,728.98 = 71,492.48/x
  3. Step 3: Cross multiply
    73,485.38x = 109,728.98 × 71,492.48
  4. Step 4: Simplify right side
    73,485.38x = 7,844,796,908.07
  5. Step 5: Solve for x
    x = 7,844,796,908.07/73,485.38
  6. Step 6: Final answer
    x = 106,753.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.