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Finding the Fourth Proportional to 528,389.60, 792,644.54 and 191,588.88

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Solution

The fourth proportional to 528,389.60, 792,644.54 and 191,588.88 is: 287,405.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,389.60 : 792,644.54 = 191,588.88 : x
  2. Step 2: Convert to fraction form
    528,389.60/792,644.54 = 191,588.88/x
  3. Step 3: Cross multiply
    528,389.60x = 792,644.54 × 191,588.88
  4. Step 4: Simplify right side
    528,389.60x = 151,861,879,656.72
  5. Step 5: Solve for x
    x = 151,861,879,656.72/528,389.60
  6. Step 6: Final answer
    x = 287,405.13

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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.