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Finding the Fourth Proportional to 6,592,839.60, 9,889,259.40 and 3,900,205.20

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Solution

The fourth proportional to 6,592,839.60, 9,889,259.40 and 3,900,205.20 is: 5,850,307.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,592,839.60 : 9,889,259.40 = 3,900,205.20 : x
  2. Step 2: Convert to fraction form
    6,592,839.60/9,889,259.40 = 3,900,205.20/x
  3. Step 3: Cross multiply
    6,592,839.60x = 9,889,259.40 × 3,900,205.20
  4. Step 4: Simplify right side
    6,592,839.60x = 38,570,140,936,028.88
  5. Step 5: Solve for x
    x = 38,570,140,936,028.88/6,592,839.60
  6. Step 6: Final answer
    x = 5,850,307.80

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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.