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Finding the Fourth Proportional to 528,490.98, 792,708.19 and 186,910.74

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Solution

The fourth proportional to 528,490.98, 792,708.19 and 186,910.74 is: 280,356.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,490.98 : 792,708.19 = 186,910.74 : x
  2. Step 2: Convert to fraction form
    528,490.98/792,708.19 = 186,910.74/x
  3. Step 3: Cross multiply
    528,490.98x = 792,708.19 × 186,910.74
  4. Step 4: Simplify right side
    528,490.98x = 148,165,673,929.68
  5. Step 5: Solve for x
    x = 148,165,673,929.68/528,490.98
  6. Step 6: Final answer
    x = 280,356.11

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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.