Home / 12,156,693.20-18,235,039.80-7,105,403.60

Finding the Fourth Proportional to 12,156,693.20, 18,235,039.80 and 7,105,403.60

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Solution

The fourth proportional to 12,156,693.20, 18,235,039.80 and 7,105,403.60 is: 10,658,105.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,156,693.20 : 18,235,039.80 = 7,105,403.60 : x
  2. Step 2: Convert to fraction form
    12,156,693.20/18,235,039.80 = 7,105,403.60/x
  3. Step 3: Cross multiply
    12,156,693.20x = 18,235,039.80 × 7,105,403.60
  4. Step 4: Simplify right side
    12,156,693.20x = 129,567,317,441,063.28
  5. Step 5: Solve for x
    x = 129,567,317,441,063.28/12,156,693.20
  6. Step 6: Final answer
    x = 10,658,105.40

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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.