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Finding the Fourth Proportional to 92,906.90, 128,264.72 and 61,168.07

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Solution

The fourth proportional to 92,906.90, 128,264.72 and 61,168.07 is: 84,446.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,906.90 : 128,264.72 = 61,168.07 : x
  2. Step 2: Convert to fraction form
    92,906.90/128,264.72 = 61,168.07/x
  3. Step 3: Cross multiply
    92,906.90x = 128,264.72 × 61,168.07
  4. Step 4: Simplify right side
    92,906.90x = 7,845,704,730.17
  5. Step 5: Solve for x
    x = 7,845,704,730.17/92,906.90
  6. Step 6: Final answer
    x = 84,446.95

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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.