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Finding the Fourth Proportional to 628,030.20, 866,876.81 and 499,197.27

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Solution

The fourth proportional to 628,030.20, 866,876.81 and 499,197.27 is: 689,047.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,030.20 : 866,876.81 = 499,197.27 : x
  2. Step 2: Convert to fraction form
    628,030.20/866,876.81 = 499,197.27/x
  3. Step 3: Cross multiply
    628,030.20x = 866,876.81 × 499,197.27
  4. Step 4: Simplify right side
    628,030.20x = 432,742,538,226.30
  5. Step 5: Solve for x
    x = 432,742,538,226.30/628,030.20
  6. Step 6: Final answer
    x = 689,047.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.