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Finding the Fourth Proportional to 74,898.44, 103,360.53 and 42,631.47

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Solution

The fourth proportional to 74,898.44, 103,360.53 and 42,631.47 is: 58,831.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,898.44 : 103,360.53 = 42,631.47 : x
  2. Step 2: Convert to fraction form
    74,898.44/103,360.53 = 42,631.47/x
  3. Step 3: Cross multiply
    74,898.44x = 103,360.53 × 42,631.47
  4. Step 4: Simplify right side
    74,898.44x = 4,406,411,333.88
  5. Step 5: Solve for x
    x = 4,406,411,333.88/74,898.44
  6. Step 6: Final answer
    x = 58,831.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.