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Finding the Fourth Proportional to 690,615.84, 953,035.32 and 384,691.44

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Solution

The fourth proportional to 690,615.84, 953,035.32 and 384,691.44 is: 530,866.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,615.84 : 953,035.32 = 384,691.44 : x
  2. Step 2: Convert to fraction form
    690,615.84/953,035.32 = 384,691.44/x
  3. Step 3: Cross multiply
    690,615.84x = 953,035.32 × 384,691.44
  4. Step 4: Simplify right side
    690,615.84x = 366,624,529,621.66
  5. Step 5: Solve for x
    x = 366,624,529,621.66/690,615.84
  6. Step 6: Final answer
    x = 530,866.09

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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.