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Finding the Fourth Proportional to 202,281.20, 303,421.80 and 52,520.30

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Solution

The fourth proportional to 202,281.20, 303,421.80 and 52,520.30 is: 78,780.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,281.20 : 303,421.80 = 52,520.30 : x
  2. Step 2: Convert to fraction form
    202,281.20/303,421.80 = 52,520.30/x
  3. Step 3: Cross multiply
    202,281.20x = 303,421.80 × 52,520.30
  4. Step 4: Simplify right side
    202,281.20x = 15,935,803,962.54
  5. Step 5: Solve for x
    x = 15,935,803,962.54/202,281.20
  6. Step 6: Final answer
    x = 78,780.45

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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.