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Finding the Fourth Proportional to 90,616.10, 135,924.15 and 90,616.10

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Solution

The fourth proportional to 90,616.10, 135,924.15 and 90,616.10 is: 135,924.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,616.10 : 135,924.15 = 90,616.10 : x
  2. Step 2: Convert to fraction form
    90,616.10/135,924.15 = 90,616.10/x
  3. Step 3: Cross multiply
    90,616.10x = 135,924.15 × 90,616.10
  4. Step 4: Simplify right side
    90,616.10x = 12,316,916,368.82
  5. Step 5: Solve for x
    x = 12,316,916,368.82/90,616.10
  6. Step 6: Final answer
    x = 135,924.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.