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Finding the Fourth Proportional to 74,677.66, 103,055.12 and 41,143.66

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Solution

The fourth proportional to 74,677.66, 103,055.12 and 41,143.66 is: 56,778.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,677.66 : 103,055.12 = 41,143.66 : x
  2. Step 2: Convert to fraction form
    74,677.66/103,055.12 = 41,143.66/x
  3. Step 3: Cross multiply
    74,677.66x = 103,055.12 × 41,143.66
  4. Step 4: Simplify right side
    74,677.66x = 4,240,064,612.82
  5. Step 5: Solve for x
    x = 4,240,064,612.82/74,677.66
  6. Step 6: Final answer
    x = 56,778.22

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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.