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Finding the Fourth Proportional to 519,775.23, 779,936.10 and 368,945.67

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Solution

The fourth proportional to 519,775.23, 779,936.10 and 368,945.67 is: 553,612.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,775.23 : 779,936.10 = 368,945.67 : x
  2. Step 2: Convert to fraction form
    519,775.23/779,936.10 = 368,945.67/x
  3. Step 3: Cross multiply
    519,775.23x = 779,936.10 × 368,945.67
  4. Step 4: Simplify right side
    519,775.23x = 287,754,046,971.69
  5. Step 5: Solve for x
    x = 287,754,046,971.69/519,775.23
  6. Step 6: Final answer
    x = 553,612.47

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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.