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Finding the Fourth Proportional to 99,585.30, 149,404.35 and 43,401.30

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Solution

The fourth proportional to 99,585.30, 149,404.35 and 43,401.30 is: 65,113.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,585.30 : 149,404.35 = 43,401.30 : x
  2. Step 2: Convert to fraction form
    99,585.30/149,404.35 = 43,401.30/x
  3. Step 3: Cross multiply
    99,585.30x = 149,404.35 × 43,401.30
  4. Step 4: Simplify right side
    99,585.30x = 6,484,343,015.66
  5. Step 5: Solve for x
    x = 6,484,343,015.66/99,585.30
  6. Step 6: Final answer
    x = 65,113.46

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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.