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Finding the Fourth Proportional to 528,093.70, 792,140.55 and 317,623.30

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Solution

The fourth proportional to 528,093.70, 792,140.55 and 317,623.30 is: 476,434.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,093.70 : 792,140.55 = 317,623.30 : x
  2. Step 2: Convert to fraction form
    528,093.70/792,140.55 = 317,623.30/x
  3. Step 3: Cross multiply
    528,093.70x = 792,140.55 × 317,623.30
  4. Step 4: Simplify right side
    528,093.70x = 251,602,295,554.82
  5. Step 5: Solve for x
    x = 251,602,295,554.82/528,093.70
  6. Step 6: Final answer
    x = 476,434.95

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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.