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Finding the Fourth Proportional to 53,412.99, 80,112.51 and 13,973.13

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Solution

The fourth proportional to 53,412.99, 80,112.51 and 13,973.13 is: 20,957.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,412.99 : 80,112.51 = 13,973.13 : x
  2. Step 2: Convert to fraction form
    53,412.99/80,112.51 = 13,973.13/x
  3. Step 3: Cross multiply
    53,412.99x = 80,112.51 × 13,973.13
  4. Step 4: Simplify right side
    53,412.99x = 1,119,422,516.86
  5. Step 5: Solve for x
    x = 1,119,422,516.86/53,412.99
  6. Step 6: Final answer
    x = 20,957.87

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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.