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Finding the Fourth Proportional to 76,797.54, 105,994.17 and 61,002.54

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Solution

The fourth proportional to 76,797.54, 105,994.17 and 61,002.54 is: 84,194.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,797.54 : 105,994.17 = 61,002.54 : x
  2. Step 2: Convert to fraction form
    76,797.54/105,994.17 = 61,002.54/x
  3. Step 3: Cross multiply
    76,797.54x = 105,994.17 × 61,002.54
  4. Step 4: Simplify right side
    76,797.54x = 6,465,913,595.19
  5. Step 5: Solve for x
    x = 6,465,913,595.19/76,797.54
  6. Step 6: Final answer
    x = 84,194.28

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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.