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Finding the Fourth Proportional to 366,814.20, 550,221.30 and 316,075.80

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Solution

The fourth proportional to 366,814.20, 550,221.30 and 316,075.80 is: 474,113.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,814.20 : 550,221.30 = 316,075.80 : x
  2. Step 2: Convert to fraction form
    366,814.20/550,221.30 = 316,075.80/x
  3. Step 3: Cross multiply
    366,814.20x = 550,221.30 × 316,075.80
  4. Step 4: Simplify right side
    366,814.20x = 173,911,637,574.54
  5. Step 5: Solve for x
    x = 173,911,637,574.54/366,814.20
  6. Step 6: Final answer
    x = 474,113.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.