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Finding the Fourth Proportional to 9,577.20, 14,365.80 and 6,985.20

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Solution

The fourth proportional to 9,577.20, 14,365.80 and 6,985.20 is: 10,477.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,577.20 : 14,365.80 = 6,985.20 : x
  2. Step 2: Convert to fraction form
    9,577.20/14,365.80 = 6,985.20/x
  3. Step 3: Cross multiply
    9,577.20x = 14,365.80 × 6,985.20
  4. Step 4: Simplify right side
    9,577.20x = 100,347,986.16
  5. Step 5: Solve for x
    x = 100,347,986.16/9,577.20
  6. Step 6: Final answer
    x = 10,477.80

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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.