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Finding the Fourth Proportional to 92,927.80, 128,239.68 and 50,486.68

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Solution

The fourth proportional to 92,927.80, 128,239.68 and 50,486.68 is: 69,671.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,927.80 : 128,239.68 = 50,486.68 : x
  2. Step 2: Convert to fraction form
    92,927.80/128,239.68 = 50,486.68/x
  3. Step 3: Cross multiply
    92,927.80x = 128,239.68 × 50,486.68
  4. Step 4: Simplify right side
    92,927.80x = 6,474,395,687.46
  5. Step 5: Solve for x
    x = 6,474,395,687.46/92,927.80
  6. Step 6: Final answer
    x = 69,671.25

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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.