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Finding the Fourth Proportional to 13,903.76, 19,187.22 and 7,616.16

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Solution

The fourth proportional to 13,903.76, 19,187.22 and 7,616.16 is: 10,510.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,903.76 : 19,187.22 = 7,616.16 : x
  2. Step 2: Convert to fraction form
    13,903.76/19,187.22 = 7,616.16/x
  3. Step 3: Cross multiply
    13,903.76x = 19,187.22 × 7,616.16
  4. Step 4: Simplify right side
    13,903.76x = 146,132,937.48
  5. Step 5: Solve for x
    x = 146,132,937.48/13,903.76
  6. Step 6: Final answer
    x = 10,510.32

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Half scale
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Double scale
Find fourth proportional to 13,904.76, 19,188.60 and 7,617.16
Similar ratio
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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.