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Finding the Fourth Proportional to 618,709.77, 928,362.74 and 319,204.17

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Solution

The fourth proportional to 618,709.77, 928,362.74 and 319,204.17 is: 478,960.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,709.77 : 928,362.74 = 319,204.17 : x
  2. Step 2: Convert to fraction form
    618,709.77/928,362.74 = 319,204.17/x
  3. Step 3: Cross multiply
    618,709.77x = 928,362.74 × 319,204.17
  4. Step 4: Simplify right side
    618,709.77x = 296,337,256,284.61
  5. Step 5: Solve for x
    x = 296,337,256,284.61/618,709.77
  6. Step 6: Final answer
    x = 478,960.04

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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.