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Finding the Fourth Proportional to 353,803.95, 530,262.93 and 278,627.22

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Solution

The fourth proportional to 353,803.95, 530,262.93 and 278,627.22 is: 417,591.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,803.95 : 530,262.93 = 278,627.22 : x
  2. Step 2: Convert to fraction form
    353,803.95/530,262.93 = 278,627.22/x
  3. Step 3: Cross multiply
    353,803.95x = 530,262.93 × 278,627.22
  4. Step 4: Simplify right side
    353,803.95x = 147,745,686,054.96
  5. Step 5: Solve for x
    x = 147,745,686,054.96/353,803.95
  6. Step 6: Final answer
    x = 417,591.96

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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.