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Finding the Fourth Proportional to 519,973, 779,860.86 and 253,465.48

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Solution

The fourth proportional to 519,973, 779,860.86 and 253,465.48 is: 380,150.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,973 : 779,860.86 = 253,465.48 : x
  2. Step 2: Convert to fraction form
    519,973/779,860.86 = 253,465.48/x
  3. Step 3: Cross multiply
    519,973x = 779,860.86 × 253,465.48
  4. Step 4: Simplify right side
    519,973x = 197,667,807,213.11
  5. Step 5: Solve for x
    x = 197,667,807,213.11/519,973
  6. Step 6: Final answer
    x = 380,150.14

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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.