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Finding the Fourth Proportional to 524,969.40, 786,935.70 and 258,511.80

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Solution

The fourth proportional to 524,969.40, 786,935.70 and 258,511.80 is: 387,512.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,969.40 : 786,935.70 = 258,511.80 : x
  2. Step 2: Convert to fraction form
    524,969.40/786,935.70 = 258,511.80/x
  3. Step 3: Cross multiply
    524,969.40x = 786,935.70 × 258,511.80
  4. Step 4: Simplify right side
    524,969.40x = 203,432,164,291.26
  5. Step 5: Solve for x
    x = 203,432,164,291.26/524,969.40
  6. Step 6: Final answer
    x = 387,512.42

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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.