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Finding the Fourth Proportional to 519,885.44, 778,053.90 and 435,740.60

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Solution

The fourth proportional to 519,885.44, 778,053.90 and 435,740.60 is: 652,123.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,885.44 : 778,053.90 = 435,740.60 : x
  2. Step 2: Convert to fraction form
    519,885.44/778,053.90 = 435,740.60/x
  3. Step 3: Cross multiply
    519,885.44x = 778,053.90 × 435,740.60
  4. Step 4: Simplify right side
    519,885.44x = 339,029,673,218.34
  5. Step 5: Solve for x
    x = 339,029,673,218.34/519,885.44
  6. Step 6: Final answer
    x = 652,123.81

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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.