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Finding the Fourth Proportional to 81,293.80, 112,185.94 and 45,483.80

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Solution

The fourth proportional to 81,293.80, 112,185.94 and 45,483.80 is: 62,767.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,293.80 : 112,185.94 = 45,483.80 : x
  2. Step 2: Convert to fraction form
    81,293.80/112,185.94 = 45,483.80/x
  3. Step 3: Cross multiply
    81,293.80x = 112,185.94 × 45,483.80
  4. Step 4: Simplify right side
    81,293.80x = 5,102,642,857.77
  5. Step 5: Solve for x
    x = 5,102,642,857.77/81,293.80
  6. Step 6: Final answer
    x = 62,767.92

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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.