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Finding the Fourth Proportional to 528,359.94, 792,565.83 and 212,774.22

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Solution

The fourth proportional to 528,359.94, 792,565.83 and 212,774.22 is: 319,171.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,359.94 : 792,565.83 = 212,774.22 : x
  2. Step 2: Convert to fraction form
    528,359.94/792,565.83 = 212,774.22/x
  3. Step 3: Cross multiply
    528,359.94x = 792,565.83 × 212,774.22
  4. Step 4: Simplify right side
    528,359.94x = 168,637,576,276.90
  5. Step 5: Solve for x
    x = 168,637,576,276.90/528,359.94
  6. Step 6: Final answer
    x = 319,171.77

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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.