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Finding the Fourth Proportional to 1,107,406.40, 1,554,568 and 1,107,406.40

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Solution

The fourth proportional to 1,107,406.40, 1,554,568 and 1,107,406.40 is: 1,554,568

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,107,406.40 : 1,554,568 = 1,107,406.40 : x
  2. Step 2: Convert to fraction form
    1,107,406.40/1,554,568 = 1,107,406.40/x
  3. Step 3: Cross multiply
    1,107,406.40x = 1,554,568 × 1,107,406.40
  4. Step 4: Simplify right side
    1,107,406.40x = 1,721,538,552,435.20
  5. Step 5: Solve for x
    x = 1,721,538,552,435.20/1,107,406.40
  6. Step 6: Final answer
    x = 1,554,568

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.