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Finding the Fourth Proportional to 618,784.84, 928,178.07 and 169,509.70

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Solution

The fourth proportional to 618,784.84, 928,178.07 and 169,509.70 is: 254,264.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,784.84 : 928,178.07 = 169,509.70 : x
  2. Step 2: Convert to fraction form
    618,784.84/928,178.07 = 169,509.70/x
  3. Step 3: Cross multiply
    618,784.84x = 928,178.07 × 169,509.70
  4. Step 4: Simplify right side
    618,784.84x = 157,335,186,192.28
  5. Step 5: Solve for x
    x = 157,335,186,192.28/618,784.84
  6. Step 6: Final answer
    x = 254,264.77

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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.