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Finding the Fourth Proportional to 355,866.72, 533,858.40 and 168,776.16

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Solution

The fourth proportional to 355,866.72, 533,858.40 and 168,776.16 is: 253,191.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,866.72 : 533,858.40 = 168,776.16 : x
  2. Step 2: Convert to fraction form
    355,866.72/533,858.40 = 168,776.16/x
  3. Step 3: Cross multiply
    355,866.72x = 533,858.40 × 168,776.16
  4. Step 4: Simplify right side
    355,866.72x = 90,102,570,735.74
  5. Step 5: Solve for x
    x = 90,102,570,735.74/355,866.72
  6. Step 6: Final answer
    x = 253,191.90

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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.