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Finding the Fourth Proportional to 8,605.93, 11,875.20 and 4,828.60

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Solution

The fourth proportional to 8,605.93, 11,875.20 and 4,828.60 is: 6,662.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,605.93 : 11,875.20 = 4,828.60 : x
  2. Step 2: Convert to fraction form
    8,605.93/11,875.20 = 4,828.60/x
  3. Step 3: Cross multiply
    8,605.93x = 11,875.20 × 4,828.60
  4. Step 4: Simplify right side
    8,605.93x = 57,340,531.34
  5. Step 5: Solve for x
    x = 57,340,531.34/8,605.93
  6. Step 6: Final answer
    x = 6,662.91

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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.