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Finding the Fourth Proportional to 356,636.70, 534,955.86 and 90,397.26

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Solution

The fourth proportional to 356,636.70, 534,955.86 and 90,397.26 is: 135,596.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,636.70 : 534,955.86 = 90,397.26 : x
  2. Step 2: Convert to fraction form
    356,636.70/534,955.86 = 90,397.26/x
  3. Step 3: Cross multiply
    356,636.70x = 534,955.86 × 90,397.26
  4. Step 4: Simplify right side
    356,636.70x = 48,358,543,964.94
  5. Step 5: Solve for x
    x = 48,358,543,964.94/356,636.70
  6. Step 6: Final answer
    x = 135,596.10

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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.