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Finding the Fourth Proportional to 10,939,409.60, 16,409,114.40 and 10,309,553.60

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Solution

The fourth proportional to 10,939,409.60, 16,409,114.40 and 10,309,553.60 is: 15,464,330.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,939,409.60 : 16,409,114.40 = 10,309,553.60 : x
  2. Step 2: Convert to fraction form
    10,939,409.60/16,409,114.40 = 10,309,553.60/x
  3. Step 3: Cross multiply
    10,939,409.60x = 16,409,114.40 × 10,309,553.60
  4. Step 4: Simplify right side
    10,939,409.60x = 169,170,644,435,331.84
  5. Step 5: Solve for x
    x = 169,170,644,435,331.84/10,939,409.60
  6. Step 6: Final answer
    x = 15,464,330.40

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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.