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Finding the Fourth Proportional to 91,873.80, 137,810.70 and 32,776.20

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Solution

The fourth proportional to 91,873.80, 137,810.70 and 32,776.20 is: 49,164.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,873.80 : 137,810.70 = 32,776.20 : x
  2. Step 2: Convert to fraction form
    91,873.80/137,810.70 = 32,776.20/x
  3. Step 3: Cross multiply
    91,873.80x = 137,810.70 × 32,776.20
  4. Step 4: Simplify right side
    91,873.80x = 4,516,911,065.34
  5. Step 5: Solve for x
    x = 4,516,911,065.34/91,873.80
  6. Step 6: Final answer
    x = 49,164.30

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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.