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Finding the Fourth Proportional to 7,777,152.51, 11,665,728.76 and 7,777,152.51

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Solution

The fourth proportional to 7,777,152.51, 11,665,728.76 and 7,777,152.51 is: 11,665,728.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,777,152.51 : 11,665,728.76 = 7,777,152.51 : x
  2. Step 2: Convert to fraction form
    7,777,152.51/11,665,728.76 = 7,777,152.51/x
  3. Step 3: Cross multiply
    7,777,152.51x = 11,665,728.76 × 7,777,152.51
  4. Step 4: Simplify right side
    7,777,152.51x = 90,726,151,706,813.19
  5. Step 5: Solve for x
    x = 90,726,151,706,813.19/7,777,152.51
  6. Step 6: Final answer
    x = 11,665,728.76

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Double scale
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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.