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Finding the Fourth Proportional to 519,863.94, 778,021.65 and 435,719.16

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Solution

The fourth proportional to 519,863.94, 778,021.65 and 435,719.16 is: 652,091.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,863.94 : 778,021.65 = 435,719.16 : x
  2. Step 2: Convert to fraction form
    519,863.94/778,021.65 = 435,719.16/x
  3. Step 3: Cross multiply
    519,863.94x = 778,021.65 × 435,719.16
  4. Step 4: Simplify right side
    519,863.94x = 338,998,939,799.81
  5. Step 5: Solve for x
    x = 338,998,939,799.81/519,863.94
  6. Step 6: Final answer
    x = 652,091.66

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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.