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Finding the Fourth Proportional to 528,074.65, 792,111.98 and 291,878.65

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Solution

The fourth proportional to 528,074.65, 792,111.98 and 291,878.65 is: 437,817.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,074.65 : 792,111.98 = 291,878.65 : x
  2. Step 2: Convert to fraction form
    528,074.65/792,111.98 = 291,878.65/x
  3. Step 3: Cross multiply
    528,074.65x = 792,111.98 × 291,878.65
  4. Step 4: Simplify right side
    528,074.65x = 231,200,575,371.23
  5. Step 5: Solve for x
    x = 231,200,575,371.23/528,074.65
  6. Step 6: Final answer
    x = 437,817.98

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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.