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Finding the Fourth Proportional to 356,674.08, 535,013.16 and 90,435.18

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Solution

The fourth proportional to 356,674.08, 535,013.16 and 90,435.18 is: 135,653.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,674.08 : 535,013.16 = 90,435.18 : x
  2. Step 2: Convert to fraction form
    356,674.08/535,013.16 = 90,435.18/x
  3. Step 3: Cross multiply
    356,674.08x = 535,013.16 × 90,435.18
  4. Step 4: Simplify right side
    356,674.08x = 48,384,011,426.97
  5. Step 5: Solve for x
    x = 48,384,011,426.97/356,674.08
  6. Step 6: Final answer
    x = 135,653.29

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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.