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Finding the Fourth Proportional to 528,096.86, 728,773.83 and 286,379.36

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Solution

The fourth proportional to 528,096.86, 728,773.83 and 286,379.36 is: 395,203.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,096.86 : 728,773.83 = 286,379.36 : x
  2. Step 2: Convert to fraction form
    528,096.86/728,773.83 = 286,379.36/x
  3. Step 3: Cross multiply
    528,096.86x = 728,773.83 × 286,379.36
  4. Step 4: Simplify right side
    528,096.86x = 208,705,779,376.28
  5. Step 5: Solve for x
    x = 208,705,779,376.28/528,096.86
  6. Step 6: Final answer
    x = 395,203.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.