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Finding the Fourth Proportional to 628,030.70, 866,877.50 and 499,197.77

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Solution

The fourth proportional to 628,030.70, 866,877.50 and 499,197.77 is: 689,048.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,030.70 : 866,877.50 = 499,197.77 : x
  2. Step 2: Convert to fraction form
    628,030.70/866,877.50 = 499,197.77/x
  3. Step 3: Cross multiply
    628,030.70x = 866,877.50 × 499,197.77
  4. Step 4: Simplify right side
    628,030.70x = 432,743,314,863.18
  5. Step 5: Solve for x
    x = 432,743,314,863.18/628,030.70
  6. Step 6: Final answer
    x = 689,048.03

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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.