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Finding the Fourth Proportional to 621,311.52, 930,472.50 and 354,262.38

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Solution

The fourth proportional to 621,311.52, 930,472.50 and 354,262.38 is: 530,541.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,311.52 : 930,472.50 = 354,262.38 : x
  2. Step 2: Convert to fraction form
    621,311.52/930,472.50 = 354,262.38/x
  3. Step 3: Cross multiply
    621,311.52x = 930,472.50 × 354,262.38
  4. Step 4: Simplify right side
    621,311.52x = 329,631,402,374.55
  5. Step 5: Solve for x
    x = 329,631,402,374.55/621,311.52
  6. Step 6: Final answer
    x = 530,541.27

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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.