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Finding the Fourth Proportional to 8,623.60, 11,900.52 and 4,897.60

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Solution

The fourth proportional to 8,623.60, 11,900.52 and 4,897.60 is: 6,758.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,623.60 : 11,900.52 = 4,897.60 : x
  2. Step 2: Convert to fraction form
    8,623.60/11,900.52 = 4,897.60/x
  3. Step 3: Cross multiply
    8,623.60x = 11,900.52 × 4,897.60
  4. Step 4: Simplify right side
    8,623.60x = 58,283,986.75
  5. Step 5: Solve for x
    x = 58,283,986.75/8,623.60
  6. Step 6: Final answer
    x = 6,758.66

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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.