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Finding the Fourth Proportional to 13,441.95, 18,549.48 and 7,392.18

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Solution

The fourth proportional to 13,441.95, 18,549.48 and 7,392.18 is: 10,200.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,441.95 : 18,549.48 = 7,392.18 : x
  2. Step 2: Convert to fraction form
    13,441.95/18,549.48 = 7,392.18/x
  3. Step 3: Cross multiply
    13,441.95x = 18,549.48 × 7,392.18
  4. Step 4: Simplify right side
    13,441.95x = 137,121,095.07
  5. Step 5: Solve for x
    x = 137,121,095.07/13,441.95
  6. Step 6: Final answer
    x = 10,200.98

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Half scale
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Double scale
Find fourth proportional to 13,442.95, 18,550.86 and 7,393.18
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.