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Finding the Fourth Proportional to 289,528.53, 434,350.84 and 99,995.85

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Solution

The fourth proportional to 289,528.53, 434,350.84 and 99,995.85 is: 150,013.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,528.53 : 434,350.84 = 99,995.85 : x
  2. Step 2: Convert to fraction form
    289,528.53/434,350.84 = 99,995.85/x
  3. Step 3: Cross multiply
    289,528.53x = 434,350.84 × 99,995.85
  4. Step 4: Simplify right side
    289,528.53x = 43,433,280,887.17
  5. Step 5: Solve for x
    x = 43,433,280,887.17/289,528.53
  6. Step 6: Final answer
    x = 150,013.82

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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.