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Finding the Fourth Proportional to 74,670.74, 103,045.61 and 41,136.74

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Solution

The fourth proportional to 74,670.74, 103,045.61 and 41,136.74 is: 56,768.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,670.74 : 103,045.61 = 41,136.74 : x
  2. Step 2: Convert to fraction form
    74,670.74/103,045.61 = 41,136.74/x
  3. Step 3: Cross multiply
    74,670.74x = 103,045.61 × 41,136.74
  4. Step 4: Simplify right side
    74,670.74x = 4,238,960,466.71
  5. Step 5: Solve for x
    x = 4,238,960,466.71/74,670.74
  6. Step 6: Final answer
    x = 56,768.70

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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.