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Finding the Fourth Proportional to 7,900.61, 10,902.55 and 4,363.75

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Solution

The fourth proportional to 7,900.61, 10,902.55 and 4,363.75 is: 6,021.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,900.61 : 10,902.55 = 4,363.75 : x
  2. Step 2: Convert to fraction form
    7,900.61/10,902.55 = 4,363.75/x
  3. Step 3: Cross multiply
    7,900.61x = 10,902.55 × 4,363.75
  4. Step 4: Simplify right side
    7,900.61x = 47,575,926.23
  5. Step 5: Solve for x
    x = 47,575,926.23/7,900.61
  6. Step 6: Final answer
    x = 6,021.80

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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.