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Finding the Fourth Proportional to 61,282.58, 84,579.80 and 57,280.37

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Solution

The fourth proportional to 61,282.58, 84,579.80 and 57,280.37 is: 79,056.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,282.58 : 84,579.80 = 57,280.37 : x
  2. Step 2: Convert to fraction form
    61,282.58/84,579.80 = 57,280.37/x
  3. Step 3: Cross multiply
    61,282.58x = 84,579.80 × 57,280.37
  4. Step 4: Simplify right side
    61,282.58x = 4,844,761,529.23
  5. Step 5: Solve for x
    x = 4,844,761,529.23/61,282.58
  6. Step 6: Final answer
    x = 79,056.10

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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.