Home / 12,986,939.60-17,922,504.84-7,185,626.96

Finding the Fourth Proportional to 12,986,939.60, 17,922,504.84 and 7,185,626.96

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Solution

The fourth proportional to 12,986,939.60, 17,922,504.84 and 7,185,626.96 is: 9,916,457.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,986,939.60 : 17,922,504.84 = 7,185,626.96 : x
  2. Step 2: Convert to fraction form
    12,986,939.60/17,922,504.84 = 7,185,626.96/x
  3. Step 3: Cross multiply
    12,986,939.60x = 17,922,504.84 × 7,185,626.96
  4. Step 4: Simplify right side
    12,986,939.60x = 128,784,433,969,034.48
  5. Step 5: Solve for x
    x = 128,784,433,969,034.48/12,986,939.60
  6. Step 6: Final answer
    x = 9,916,457.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.