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Finding the Fourth Proportional to 74,465.66, 102,721.32 and 47,191.65

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Solution

The fourth proportional to 74,465.66, 102,721.32 and 47,191.65 is: 65,098.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,465.66 : 102,721.32 = 47,191.65 : x
  2. Step 2: Convert to fraction form
    74,465.66/102,721.32 = 47,191.65/x
  3. Step 3: Cross multiply
    74,465.66x = 102,721.32 × 47,191.65
  4. Step 4: Simplify right side
    74,465.66x = 4,847,588,580.98
  5. Step 5: Solve for x
    x = 4,847,588,580.98/74,465.66
  6. Step 6: Final answer
    x = 65,098.31

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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.