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Finding the Fourth Proportional to 614,801.20, 921,208.20 and 347,767.60

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Solution

The fourth proportional to 614,801.20, 921,208.20 and 347,767.60 is: 521,089.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,801.20 : 921,208.20 = 347,767.60 : x
  2. Step 2: Convert to fraction form
    614,801.20/921,208.20 = 347,767.60/x
  3. Step 3: Cross multiply
    614,801.20x = 921,208.20 × 347,767.60
  4. Step 4: Simplify right side
    614,801.20x = 320,366,364,814.32
  5. Step 5: Solve for x
    x = 320,366,364,814.32/614,801.20
  6. Step 6: Final answer
    x = 521,089.36

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1.5x scale

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.