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Finding the Fourth Proportional to 74,396.62, 102,673.67 and 42,136.98

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Solution

The fourth proportional to 74,396.62, 102,673.67 and 42,136.98 is: 58,152.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,396.62 : 102,673.67 = 42,136.98 : x
  2. Step 2: Convert to fraction form
    74,396.62/102,673.67 = 42,136.98/x
  3. Step 3: Cross multiply
    74,396.62x = 102,673.67 × 42,136.98
  4. Step 4: Simplify right side
    74,396.62x = 4,326,358,379.32
  5. Step 5: Solve for x
    x = 4,326,358,379.32/74,396.62
  6. Step 6: Final answer
    x = 58,152.62

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1.5x scale

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.