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Finding the Fourth Proportional to 501,234.29, 691,639.59 and 286,388.27

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Solution

The fourth proportional to 501,234.29, 691,639.59 and 286,388.27 is: 395,179.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,234.29 : 691,639.59 = 286,388.27 : x
  2. Step 2: Convert to fraction form
    501,234.29/691,639.59 = 286,388.27/x
  3. Step 3: Cross multiply
    501,234.29x = 691,639.59 × 286,388.27
  4. Step 4: Simplify right side
    501,234.29x = 198,077,465,643.61
  5. Step 5: Solve for x
    x = 198,077,465,643.61/501,234.29
  6. Step 6: Final answer
    x = 395,179.40

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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.