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Finding the Fourth Proportional to 53,368.47, 80,064.14 and 15,931.49

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Solution

The fourth proportional to 53,368.47, 80,064.14 and 15,931.49 is: 23,900.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,368.47 : 80,064.14 = 15,931.49 : x
  2. Step 2: Convert to fraction form
    53,368.47/80,064.14 = 15,931.49/x
  3. Step 3: Cross multiply
    53,368.47x = 80,064.14 × 15,931.49
  4. Step 4: Simplify right side
    53,368.47x = 1,275,540,565.79
  5. Step 5: Solve for x
    x = 1,275,540,565.79/53,368.47
  6. Step 6: Final answer
    x = 23,900.64

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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.