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Finding the Fourth Proportional to 1,166,712.78, 1,747,349.88 and 1,126,304.30

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Solution

The fourth proportional to 1,166,712.78, 1,747,349.88 and 1,126,304.30 is: 1,686,831.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,166,712.78 : 1,747,349.88 = 1,126,304.30 : x
  2. Step 2: Convert to fraction form
    1,166,712.78/1,747,349.88 = 1,126,304.30/x
  3. Step 3: Cross multiply
    1,166,712.78x = 1,747,349.88 × 1,126,304.30
  4. Step 4: Simplify right side
    1,166,712.78x = 1,968,047,683,448.48
  5. Step 5: Solve for x
    x = 1,968,047,683,448.48/1,166,712.78
  6. Step 6: Final answer
    x = 1,686,831.34

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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.