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Finding the Fourth Proportional to 98,813.80, 148,317.90 and 48,950.20

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Solution

The fourth proportional to 98,813.80, 148,317.90 and 48,950.20 is: 73,473.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,813.80 : 148,317.90 = 48,950.20 : x
  2. Step 2: Convert to fraction form
    98,813.80/148,317.90 = 48,950.20/x
  3. Step 3: Cross multiply
    98,813.80x = 148,317.90 × 48,950.20
  4. Step 4: Simplify right side
    98,813.80x = 7,260,190,868.58
  5. Step 5: Solve for x
    x = 7,260,190,868.58/98,813.80
  6. Step 6: Final answer
    x = 73,473.45

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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.