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Finding the Fourth Proportional to 73,445.19, 101,355 and 39,911.19

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Solution

The fourth proportional to 73,445.19, 101,355 and 39,911.19 is: 55,077.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,445.19 : 101,355 = 39,911.19 : x
  2. Step 2: Convert to fraction form
    73,445.19/101,355 = 39,911.19/x
  3. Step 3: Cross multiply
    73,445.19x = 101,355 × 39,911.19
  4. Step 4: Simplify right side
    73,445.19x = 4,045,198,662.45
  5. Step 5: Solve for x
    x = 4,045,198,662.45/73,445.19
  6. Step 6: Final answer
    x = 55,077.79

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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.