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Finding the Fourth Proportional to 352,338.10, 528,440.72 and 99,616.59

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Solution

The fourth proportional to 352,338.10, 528,440.72 and 99,616.59 is: 149,406.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,338.10 : 528,440.72 = 99,616.59 : x
  2. Step 2: Convert to fraction form
    352,338.10/528,440.72 = 99,616.59/x
  3. Step 3: Cross multiply
    352,338.10x = 528,440.72 × 99,616.59
  4. Step 4: Simplify right side
    352,338.10x = 52,641,462,045.46
  5. Step 5: Solve for x
    x = 52,641,462,045.46/352,338.10
  6. Step 6: Final answer
    x = 149,406.10

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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.