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Finding the Fourth Proportional to 1,997,720, 2,996,582.88 and 815,768

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Solution

The fourth proportional to 1,997,720, 2,996,582.88 and 815,768 is: 1,223,653.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,997,720 : 2,996,582.88 = 815,768 : x
  2. Step 2: Convert to fraction form
    1,997,720/2,996,582.88 = 815,768/x
  3. Step 3: Cross multiply
    1,997,720x = 2,996,582.88 × 815,768
  4. Step 4: Simplify right side
    1,997,720x = 2,444,516,422,851.84
  5. Step 5: Solve for x
    x = 2,444,516,422,851.84/1,997,720
  6. Step 6: Final answer
    x = 1,223,653.18

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.