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Finding the Fourth Proportional to 711,698.40, 1,065,992.40 and 552,679.20

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Solution

The fourth proportional to 711,698.40, 1,065,992.40 and 552,679.20 is: 827,811.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,698.40 : 1,065,992.40 = 552,679.20 : x
  2. Step 2: Convert to fraction form
    711,698.40/1,065,992.40 = 552,679.20/x
  3. Step 3: Cross multiply
    711,698.40x = 1,065,992.40 × 552,679.20
  4. Step 4: Simplify right side
    711,698.40x = 589,151,826,838.08
  5. Step 5: Solve for x
    x = 589,151,826,838.08/711,698.40
  6. Step 6: Final answer
    x = 827,811.09

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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.