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Finding the Fourth Proportional to 528,386.60, 792,640.02 and 191,585.88

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Solution

The fourth proportional to 528,386.60, 792,640.02 and 191,585.88 is: 287,400.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,386.60 : 792,640.02 = 191,585.88 : x
  2. Step 2: Convert to fraction form
    528,386.60/792,640.02 = 191,585.88/x
  3. Step 3: Cross multiply
    528,386.60x = 792,640.02 × 191,585.88
  4. Step 4: Simplify right side
    528,386.60x = 151,858,635,754.92
  5. Step 5: Solve for x
    x = 151,858,635,754.92/528,386.60
  6. Step 6: Final answer
    x = 287,400.62

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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.