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Finding the Fourth Proportional to 518,077.35, 714,983.36 and 288,649.71

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Solution

The fourth proportional to 518,077.35, 714,983.36 and 288,649.71 is: 398,357.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,077.35 : 714,983.36 = 288,649.71 : x
  2. Step 2: Convert to fraction form
    518,077.35/714,983.36 = 288,649.71/x
  3. Step 3: Cross multiply
    518,077.35x = 714,983.36 × 288,649.71
  4. Step 4: Simplify right side
    518,077.35x = 206,379,738,075.58
  5. Step 5: Solve for x
    x = 206,379,738,075.58/518,077.35
  6. Step 6: Final answer
    x = 398,357.00

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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.