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Finding the Fourth Proportional to 690,416.82, 952,767.54 and 384,486.53

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Solution

The fourth proportional to 690,416.82, 952,767.54 and 384,486.53 is: 530,587.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,416.82 : 952,767.54 = 384,486.53 : x
  2. Step 2: Convert to fraction form
    690,416.82/952,767.54 = 384,486.53/x
  3. Step 3: Cross multiply
    690,416.82x = 952,767.54 × 384,486.53
  4. Step 4: Simplify right side
    690,416.82x = 366,326,285,351.24
  5. Step 5: Solve for x
    x = 366,326,285,351.24/690,416.82
  6. Step 6: Final answer
    x = 530,587.14

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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.