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Finding the Fourth Proportional to 14,068.16, 19,420.04 and 8,765.60

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Solution

The fourth proportional to 14,068.16, 19,420.04 and 8,765.60 is: 12,100.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,068.16 : 19,420.04 = 8,765.60 : x
  2. Step 2: Convert to fraction form
    14,068.16/19,420.04 = 8,765.60/x
  3. Step 3: Cross multiply
    14,068.16x = 19,420.04 × 8,765.60
  4. Step 4: Simplify right side
    14,068.16x = 170,228,178.13
  5. Step 5: Solve for x
    x = 170,228,178.13/14,068.16
  6. Step 6: Final answer
    x = 12,100.25

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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.