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Finding the Fourth Proportional to 73,149.60, 100,953.18 and 45,945.48

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Solution

The fourth proportional to 73,149.60, 100,953.18 and 45,945.48 is: 63,408.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,149.60 : 100,953.18 = 45,945.48 : x
  2. Step 2: Convert to fraction form
    73,149.60/100,953.18 = 45,945.48/x
  3. Step 3: Cross multiply
    73,149.60x = 100,953.18 × 45,945.48
  4. Step 4: Simplify right side
    73,149.60x = 4,638,342,312.63
  5. Step 5: Solve for x
    x = 4,638,342,312.63/73,149.60
  6. Step 6: Final answer
    x = 63,408.99

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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.