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Finding the Fourth Proportional to 355,039.40, 532,559.10 and 168,415.40

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Solution

The fourth proportional to 355,039.40, 532,559.10 and 168,415.40 is: 252,623.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,039.40 : 532,559.10 = 168,415.40 : x
  2. Step 2: Convert to fraction form
    355,039.40/532,559.10 = 168,415.40/x
  3. Step 3: Cross multiply
    355,039.40x = 532,559.10 × 168,415.40
  4. Step 4: Simplify right side
    355,039.40x = 89,691,153,850.14
  5. Step 5: Solve for x
    x = 89,691,153,850.14/355,039.40
  6. Step 6: Final answer
    x = 252,623.10

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1.5x scale

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.