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Finding the Fourth Proportional to 383,110.95, 528,705.14 and 211,041.39

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Solution

The fourth proportional to 383,110.95, 528,705.14 and 211,041.39 is: 291,243.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,110.95 : 528,705.14 = 211,041.39 : x
  2. Step 2: Convert to fraction form
    383,110.95/528,705.14 = 211,041.39/x
  3. Step 3: Cross multiply
    383,110.95x = 528,705.14 × 211,041.39
  4. Step 4: Simplify right side
    383,110.95x = 111,578,666,590.54
  5. Step 5: Solve for x
    x = 111,578,666,590.54/383,110.95
  6. Step 6: Final answer
    x = 291,243.74

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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.