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Finding the Fourth Proportional to 357,047.64, 535,569.15 and 90,805.85

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Solution

The fourth proportional to 357,047.64, 535,569.15 and 90,805.85 is: 136,208.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,047.64 : 535,569.15 = 90,805.85 : x
  2. Step 2: Convert to fraction form
    357,047.64/535,569.15 = 90,805.85/x
  3. Step 3: Cross multiply
    357,047.64x = 535,569.15 × 90,805.85
  4. Step 4: Simplify right side
    357,047.64x = 48,632,814,072.38
  5. Step 5: Solve for x
    x = 48,632,814,072.38/357,047.64
  6. Step 6: Final answer
    x = 136,208.19

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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.