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Finding the Fourth Proportional to 14,108.60, 19,468.94 and 7,820.60

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Solution

The fourth proportional to 14,108.60, 19,468.94 and 7,820.60 is: 10,791.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,108.60 : 19,468.94 = 7,820.60 : x
  2. Step 2: Convert to fraction form
    14,108.60/19,468.94 = 7,820.60/x
  3. Step 3: Cross multiply
    14,108.60x = 19,468.94 × 7,820.60
  4. Step 4: Simplify right side
    14,108.60x = 152,258,792.16
  5. Step 5: Solve for x
    x = 152,258,792.16/14,108.60
  6. Step 6: Final answer
    x = 10,791.91

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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.