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Finding the Fourth Proportional to 528,094.20, 792,141.30 and 317,623.80

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Solution

The fourth proportional to 528,094.20, 792,141.30 and 317,623.80 is: 476,435.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,094.20 : 792,141.30 = 317,623.80 : x
  2. Step 2: Convert to fraction form
    528,094.20/792,141.30 = 317,623.80/x
  3. Step 3: Cross multiply
    528,094.20x = 792,141.30 × 317,623.80
  4. Step 4: Simplify right side
    528,094.20x = 251,602,929,842.94
  5. Step 5: Solve for x
    x = 251,602,929,842.94/528,094.20
  6. Step 6: Final answer
    x = 476,435.70

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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.