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Finding the Fourth Proportional to 369,215.40, 553,661.10 and 169,469.40

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Solution

The fourth proportional to 369,215.40, 553,661.10 and 169,469.40 is: 254,129.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,215.40 : 553,661.10 = 169,469.40 : x
  2. Step 2: Convert to fraction form
    369,215.40/553,661.10 = 169,469.40/x
  3. Step 3: Cross multiply
    369,215.40x = 553,661.10 × 169,469.40
  4. Step 4: Simplify right side
    369,215.40x = 93,828,614,420.34
  5. Step 5: Solve for x
    x = 93,828,614,420.34/369,215.40
  6. Step 6: Final answer
    x = 254,129.74

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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.