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Finding the Fourth Proportional to 13,463.76, 18,580.60 and 7,798.76

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Solution

The fourth proportional to 13,463.76, 18,580.60 and 7,798.76 is: 10,762.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,463.76 : 18,580.60 = 7,798.76 : x
  2. Step 2: Convert to fraction form
    13,463.76/18,580.60 = 7,798.76/x
  3. Step 3: Cross multiply
    13,463.76x = 18,580.60 × 7,798.76
  4. Step 4: Simplify right side
    13,463.76x = 144,905,640.06
  5. Step 5: Solve for x
    x = 144,905,640.06/13,463.76
  6. Step 6: Final answer
    x = 10,762.64

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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.