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Finding the Fourth Proportional to 1,811,116.80, 2,713,564.80 and 956,923.20

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Solution

The fourth proportional to 1,811,116.80, 2,713,564.80 and 956,923.20 is: 1,433,741.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,811,116.80 : 2,713,564.80 = 956,923.20 : x
  2. Step 2: Convert to fraction form
    1,811,116.80/2,713,564.80 = 956,923.20/x
  3. Step 3: Cross multiply
    1,811,116.80x = 2,713,564.80 × 956,923.20
  4. Step 4: Simplify right side
    1,811,116.80x = 2,596,673,111,823.36
  5. Step 5: Solve for x
    x = 2,596,673,111,823.36/1,811,116.80
  6. Step 6: Final answer
    x = 1,433,741.39

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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.