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Finding the Fourth Proportional to 528,672.40, 793,107.60 and 173,788.72

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Solution

The fourth proportional to 528,672.40, 793,107.60 and 173,788.72 is: 260,715.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,672.40 : 793,107.60 = 173,788.72 : x
  2. Step 2: Convert to fraction form
    528,672.40/793,107.60 = 173,788.72/x
  3. Step 3: Cross multiply
    528,672.40x = 793,107.60 × 173,788.72
  4. Step 4: Simplify right side
    528,672.40x = 137,833,154,626.27
  5. Step 5: Solve for x
    x = 137,833,154,626.27/528,672.40
  6. Step 6: Final answer
    x = 260,715.62

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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.