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Finding the Fourth Proportional to 690,164.76, 952,402.46 and 384,233.28

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Solution

The fourth proportional to 690,164.76, 952,402.46 and 384,233.28 is: 530,228.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,164.76 : 952,402.46 = 384,233.28 : x
  2. Step 2: Convert to fraction form
    690,164.76/952,402.46 = 384,233.28/x
  3. Step 3: Cross multiply
    690,164.76x = 952,402.46 × 384,233.28
  4. Step 4: Simplify right side
    690,164.76x = 365,944,721,085.87
  5. Step 5: Solve for x
    x = 365,944,721,085.87/690,164.76
  6. Step 6: Final answer
    x = 530,228.06

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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.