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Finding the Fourth Proportional to 18,762.93, 28,176.59 and 16,659.31

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Solution

The fourth proportional to 18,762.93, 28,176.59 and 16,659.31 is: 25,017.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,762.93 : 28,176.59 = 16,659.31 : x
  2. Step 2: Convert to fraction form
    18,762.93/28,176.59 = 16,659.31/x
  3. Step 3: Cross multiply
    18,762.93x = 28,176.59 × 16,659.31
  4. Step 4: Simplify right side
    18,762.93x = 469,402,372.22
  5. Step 5: Solve for x
    x = 469,402,372.22/18,762.93
  6. Step 6: Final answer
    x = 25,017.55

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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.