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Finding the Fourth Proportional to 243,368.16, 365,086.85 and 74,902.53

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Solution

The fourth proportional to 243,368.16, 365,086.85 and 74,902.53 is: 112,364.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,368.16 : 365,086.85 = 74,902.53 : x
  2. Step 2: Convert to fraction form
    243,368.16/365,086.85 = 74,902.53/x
  3. Step 3: Cross multiply
    243,368.16x = 365,086.85 × 74,902.53
  4. Step 4: Simplify right side
    243,368.16x = 27,345,927,932.38
  5. Step 5: Solve for x
    x = 27,345,927,932.38/243,368.16
  6. Step 6: Final answer
    x = 112,364.44

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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.