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Finding the Fourth Proportional to 9,855.50, 13,602.90 and 6,498.92

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Solution

The fourth proportional to 9,855.50, 13,602.90 and 6,498.92 is: 8,970.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,855.50 : 13,602.90 = 6,498.92 : x
  2. Step 2: Convert to fraction form
    9,855.50/13,602.90 = 6,498.92/x
  3. Step 3: Cross multiply
    9,855.50x = 13,602.90 × 6,498.92
  4. Step 4: Simplify right side
    9,855.50x = 88,404,158.87
  5. Step 5: Solve for x
    x = 88,404,158.87/9,855.50
  6. Step 6: Final answer
    x = 8,970.03

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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.