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Finding the Fourth Proportional to 74,798.96, 103,223.04 and 40,807.98

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Solution

The fourth proportional to 74,798.96, 103,223.04 and 40,807.98 is: 56,315.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,798.96 : 103,223.04 = 40,807.98 : x
  2. Step 2: Convert to fraction form
    74,798.96/103,223.04 = 40,807.98/x
  3. Step 3: Cross multiply
    74,798.96x = 103,223.04 × 40,807.98
  4. Step 4: Simplify right side
    74,798.96x = 4,212,323,751.86
  5. Step 5: Solve for x
    x = 4,212,323,751.86/74,798.96
  6. Step 6: Final answer
    x = 56,315.27

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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.