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Finding the Fourth Proportional to 352,270.61, 528,438.06 and 99,554.75

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Solution

The fourth proportional to 352,270.61, 528,438.06 and 99,554.75 is: 149,341.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,270.61 : 528,438.06 = 99,554.75 : x
  2. Step 2: Convert to fraction form
    352,270.61/528,438.06 = 99,554.75/x
  3. Step 3: Cross multiply
    352,270.61x = 528,438.06 × 99,554.75
  4. Step 4: Simplify right side
    352,270.61x = 52,608,516,311.59
  5. Step 5: Solve for x
    x = 52,608,516,311.59/352,270.61
  6. Step 6: Final answer
    x = 149,341.20

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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.