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Finding the Fourth Proportional to 80,420.15, 110,977.66 and 46,427.49

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Solution

The fourth proportional to 80,420.15, 110,977.66 and 46,427.49 is: 64,068.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,420.15 : 110,977.66 = 46,427.49 : x
  2. Step 2: Convert to fraction form
    80,420.15/110,977.66 = 46,427.49/x
  3. Step 3: Cross multiply
    80,420.15x = 110,977.66 × 46,427.49
  4. Step 4: Simplify right side
    80,420.15x = 5,152,413,412.85
  5. Step 5: Solve for x
    x = 5,152,413,412.85/80,420.15
  6. Step 6: Final answer
    x = 64,068.69

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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.