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Finding the Fourth Proportional to 417,563.80, 626,342.70 and 102,017.80

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Solution

The fourth proportional to 417,563.80, 626,342.70 and 102,017.80 is: 153,025.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,563.80 : 626,342.70 = 102,017.80 : x
  2. Step 2: Convert to fraction form
    417,563.80/626,342.70 = 102,017.80/x
  3. Step 3: Cross multiply
    417,563.80x = 626,342.70 × 102,017.80
  4. Step 4: Simplify right side
    417,563.80x = 63,898,104,300.06
  5. Step 5: Solve for x
    x = 63,898,104,300.06/417,563.80
  6. Step 6: Final answer
    x = 153,025.97

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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.