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Finding the Fourth Proportional to 53,199.66, 79,811.16 and 15,762.68

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Solution

The fourth proportional to 53,199.66, 79,811.16 and 15,762.68 is: 23,647.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,199.66 : 79,811.16 = 15,762.68 : x
  2. Step 2: Convert to fraction form
    53,199.66/79,811.16 = 15,762.68/x
  3. Step 3: Cross multiply
    53,199.66x = 79,811.16 × 15,762.68
  4. Step 4: Simplify right side
    53,199.66x = 1,258,037,775.51
  5. Step 5: Solve for x
    x = 1,258,037,775.51/53,199.66
  6. Step 6: Final answer
    x = 23,647.48

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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.