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Finding the Fourth Proportional to 402,192.70, 603,288.48 and 102,673.28

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Solution

The fourth proportional to 402,192.70, 603,288.48 and 102,673.28 is: 154,009.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,192.70 : 603,288.48 = 102,673.28 : x
  2. Step 2: Convert to fraction form
    402,192.70/603,288.48 = 102,673.28/x
  3. Step 3: Cross multiply
    402,192.70x = 603,288.48 × 102,673.28
  4. Step 4: Simplify right side
    402,192.70x = 61,941,607,027.81
  5. Step 5: Solve for x
    x = 61,941,607,027.81/402,192.70
  6. Step 6: Final answer
    x = 154,009.77

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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.