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Finding the Fourth Proportional to 518,895.26, 716,048.12 and 289,476.53

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Solution

The fourth proportional to 518,895.26, 716,048.12 and 289,476.53 is: 399,462.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,895.26 : 716,048.12 = 289,476.53 : x
  2. Step 2: Convert to fraction form
    518,895.26/716,048.12 = 289,476.53/x
  3. Step 3: Cross multiply
    518,895.26x = 716,048.12 × 289,476.53
  4. Step 4: Simplify right side
    518,895.26x = 207,279,122,234.07
  5. Step 5: Solve for x
    x = 207,279,122,234.07/518,895.26
  6. Step 6: Final answer
    x = 399,462.36

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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.