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Finding the Fourth Proportional to 578,419.17, 867,805.94 and 258,839.94

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Solution

The fourth proportional to 578,419.17, 867,805.94 and 258,839.94 is: 388,339.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,419.17 : 867,805.94 = 258,839.94 : x
  2. Step 2: Convert to fraction form
    578,419.17/867,805.94 = 258,839.94/x
  3. Step 3: Cross multiply
    578,419.17x = 867,805.94 × 258,839.94
  4. Step 4: Simplify right side
    578,419.17x = 224,622,837,441.24
  5. Step 5: Solve for x
    x = 224,622,837,441.24/578,419.17
  6. Step 6: Final answer
    x = 388,339.20

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1.5x scale

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.