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Finding the Fourth Proportional to 92,797.47, 128,115.51 and 61,021.17

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Solution

The fourth proportional to 92,797.47, 128,115.51 and 61,021.17 is: 84,245.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,797.47 : 128,115.51 = 61,021.17 : x
  2. Step 2: Convert to fraction form
    92,797.47/128,115.51 = 61,021.17/x
  3. Step 3: Cross multiply
    92,797.47x = 128,115.51 × 61,021.17
  4. Step 4: Simplify right side
    92,797.47x = 7,817,758,315.35
  5. Step 5: Solve for x
    x = 7,817,758,315.35/92,797.47
  6. Step 6: Final answer
    x = 84,245.38

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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.