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Finding the Fourth Proportional to 92,971.59, 128,301.63 and 50,530.17

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Solution

The fourth proportional to 92,971.59, 128,301.63 and 50,530.17 is: 69,732.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,971.59 : 128,301.63 = 50,530.17 : x
  2. Step 2: Convert to fraction form
    92,971.59/128,301.63 = 50,530.17/x
  3. Step 3: Cross multiply
    92,971.59x = 128,301.63 × 50,530.17
  4. Step 4: Simplify right side
    92,971.59x = 6,483,103,175.18
  5. Step 5: Solve for x
    x = 6,483,103,175.18/92,971.59
  6. Step 6: Final answer
    x = 69,732.09

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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.