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Finding the Fourth Proportional to 8,762.40, 12,092.30 and 4,783.68

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Solution

The fourth proportional to 8,762.40, 12,092.30 and 4,783.68 is: 6,601.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,762.40 : 12,092.30 = 4,783.68 : x
  2. Step 2: Convert to fraction form
    8,762.40/12,092.30 = 4,783.68/x
  3. Step 3: Cross multiply
    8,762.40x = 12,092.30 × 4,783.68
  4. Step 4: Simplify right side
    8,762.40x = 57,845,669.75
  5. Step 5: Solve for x
    x = 57,845,669.75/8,762.40
  6. Step 6: Final answer
    x = 6,601.58

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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.