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Finding the Fourth Proportional to 354,622.60, 531,933.90 and 144,411.40

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Solution

The fourth proportional to 354,622.60, 531,933.90 and 144,411.40 is: 216,617.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,622.60 : 531,933.90 = 144,411.40 : x
  2. Step 2: Convert to fraction form
    354,622.60/531,933.90 = 144,411.40/x
  3. Step 3: Cross multiply
    354,622.60x = 531,933.90 × 144,411.40
  4. Step 4: Simplify right side
    354,622.60x = 76,817,319,206.46
  5. Step 5: Solve for x
    x = 76,817,319,206.46/354,622.60
  6. Step 6: Final answer
    x = 216,617.10

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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.