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Finding the Fourth Proportional to 528,093.78, 728,769.62 and 286,376.29

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Solution

The fourth proportional to 528,093.78, 728,769.62 and 286,376.29 is: 395,199.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,093.78 : 728,769.62 = 286,376.29 : x
  2. Step 2: Convert to fraction form
    528,093.78/728,769.62 = 286,376.29/x
  3. Step 3: Cross multiply
    528,093.78x = 728,769.62 × 286,376.29
  4. Step 4: Simplify right side
    528,093.78x = 208,702,340,040.31
  5. Step 5: Solve for x
    x = 208,702,340,040.31/528,093.78
  6. Step 6: Final answer
    x = 395,199.39

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1.5x scale

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.