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Finding the Fourth Proportional to 99,544.80, 149,317.20 and 47,056.80

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Solution

The fourth proportional to 99,544.80, 149,317.20 and 47,056.80 is: 70,585.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,544.80 : 149,317.20 = 47,056.80 : x
  2. Step 2: Convert to fraction form
    99,544.80/149,317.20 = 47,056.80/x
  3. Step 3: Cross multiply
    99,544.80x = 149,317.20 × 47,056.80
  4. Step 4: Simplify right side
    99,544.80x = 7,026,389,616.96
  5. Step 5: Solve for x
    x = 7,026,389,616.96/99,544.80
  6. Step 6: Final answer
    x = 70,585.20

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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.