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Finding the Fourth Proportional to 528,791.76, 793,019.16 and 173,723.40

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Solution

The fourth proportional to 528,791.76, 793,019.16 and 173,723.40 is: 260,529.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,791.76 : 793,019.16 = 173,723.40 : x
  2. Step 2: Convert to fraction form
    528,791.76/793,019.16 = 173,723.40/x
  3. Step 3: Cross multiply
    528,791.76x = 793,019.16 × 173,723.40
  4. Step 4: Simplify right side
    528,791.76x = 137,765,984,740.34
  5. Step 5: Solve for x
    x = 137,765,984,740.34/528,791.76
  6. Step 6: Final answer
    x = 260,529.75

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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.