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Finding the Fourth Proportional to 519,407.65, 779,358.23 and 359,729.33

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Solution

The fourth proportional to 519,407.65, 779,358.23 and 359,729.33 is: 539,764.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,407.65 : 779,358.23 = 359,729.33 : x
  2. Step 2: Convert to fraction form
    519,407.65/779,358.23 = 359,729.33/x
  3. Step 3: Cross multiply
    519,407.65x = 779,358.23 × 359,729.33
  4. Step 4: Simplify right side
    519,407.65x = 280,358,013,907.89
  5. Step 5: Solve for x
    x = 280,358,013,907.89/519,407.65
  6. Step 6: Final answer
    x = 539,764.89

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1.5x scale

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.