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Finding the Fourth Proportional to 6,646,509.80, 9,969,764.70 and 6,604,519.40

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Solution

The fourth proportional to 6,646,509.80, 9,969,764.70 and 6,604,519.40 is: 9,906,779.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,646,509.80 : 9,969,764.70 = 6,604,519.40 : x
  2. Step 2: Convert to fraction form
    6,646,509.80/9,969,764.70 = 6,604,519.40/x
  3. Step 3: Cross multiply
    6,646,509.80x = 9,969,764.70 × 6,604,519.40
  4. Step 4: Simplify right side
    6,646,509.80x = 65,845,504,374,585.18
  5. Step 5: Solve for x
    x = 65,845,504,374,585.18/6,646,509.80
  6. Step 6: Final answer
    x = 9,906,779.10

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Similar ratio
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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.