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Finding the Fourth Proportional to 474,347.80, 709,793.70 and 349,931.80

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Solution

The fourth proportional to 474,347.80, 709,793.70 and 349,931.80 is: 523,622.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,347.80 : 709,793.70 = 349,931.80 : x
  2. Step 2: Convert to fraction form
    474,347.80/709,793.70 = 349,931.80/x
  3. Step 3: Cross multiply
    474,347.80x = 709,793.70 × 349,931.80
  4. Step 4: Simplify right side
    474,347.80x = 248,379,387,069.66
  5. Step 5: Solve for x
    x = 248,379,387,069.66/474,347.80
  6. Step 6: Final answer
    x = 523,622.93

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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.