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Finding the Fourth Proportional to 356,924.72, 535,401.66 and 90,692.10

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Solution

The fourth proportional to 356,924.72, 535,401.66 and 90,692.10 is: 136,041.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,924.72 : 535,401.66 = 90,692.10 : x
  2. Step 2: Convert to fraction form
    356,924.72/535,401.66 = 90,692.10/x
  3. Step 3: Cross multiply
    356,924.72x = 535,401.66 × 90,692.10
  4. Step 4: Simplify right side
    356,924.72x = 48,556,700,888.89
  5. Step 5: Solve for x
    x = 48,556,700,888.89/356,924.72
  6. Step 6: Final answer
    x = 136,041.85

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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.