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Finding the Fourth Proportional to 12,365.95, 18,549.78 and 4,970.42

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Solution

The fourth proportional to 12,365.95, 18,549.78 and 4,970.42 is: 7,455.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,365.95 : 18,549.78 = 4,970.42 : x
  2. Step 2: Convert to fraction form
    12,365.95/18,549.78 = 4,970.42/x
  3. Step 3: Cross multiply
    12,365.95x = 18,549.78 × 4,970.42
  4. Step 4: Simplify right side
    12,365.95x = 92,200,197.51
  5. Step 5: Solve for x
    x = 92,200,197.51/12,365.95
  6. Step 6: Final answer
    x = 7,455.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.