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Finding the Fourth Proportional to 528,094.78, 728,771 and 286,377.29

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Solution

The fourth proportional to 528,094.78, 728,771 and 286,377.29 is: 395,200.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,094.78 : 728,771 = 286,377.29 : x
  2. Step 2: Convert to fraction form
    528,094.78/728,771 = 286,377.29/x
  3. Step 3: Cross multiply
    528,094.78x = 728,771 × 286,377.29
  4. Step 4: Simplify right side
    528,094.78x = 208,703,464,010.59
  5. Step 5: Solve for x
    x = 208,703,464,010.59/528,094.78
  6. Step 6: Final answer
    x = 395,200.77

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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.