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Finding the Fourth Proportional to 74,487.58, 102,792.99 and 40,953.58

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Solution

The fourth proportional to 74,487.58, 102,792.99 and 40,953.58 is: 56,516.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,487.58 : 102,792.99 = 40,953.58 : x
  2. Step 2: Convert to fraction form
    74,487.58/102,792.99 = 40,953.58/x
  3. Step 3: Cross multiply
    74,487.58x = 102,792.99 × 40,953.58
  4. Step 4: Simplify right side
    74,487.58x = 4,209,740,939.40
  5. Step 5: Solve for x
    x = 4,209,740,939.40/74,487.58
  6. Step 6: Final answer
    x = 56,516.01

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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.