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Finding the Fourth Proportional to 626,656.88, 939,952.20 and 386,816.24

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Solution

The fourth proportional to 626,656.88, 939,952.20 and 386,816.24 is: 580,203.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,656.88 : 939,952.20 = 386,816.24 : x
  2. Step 2: Convert to fraction form
    626,656.88/939,952.20 = 386,816.24/x
  3. Step 3: Cross multiply
    626,656.88x = 939,952.20 × 386,816.24
  4. Step 4: Simplify right side
    626,656.88x = 363,588,775,783.73
  5. Step 5: Solve for x
    x = 363,588,775,783.73/626,656.88
  6. Step 6: Final answer
    x = 580,203.92

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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.