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Finding the Fourth Proportional to 353,860.81, 530,409.40 and 173,736.74

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Solution

The fourth proportional to 353,860.81, 530,409.40 and 173,736.74 is: 260,417.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,860.81 : 530,409.40 = 173,736.74 : x
  2. Step 2: Convert to fraction form
    353,860.81/530,409.40 = 173,736.74/x
  3. Step 3: Cross multiply
    353,860.81x = 530,409.40 × 173,736.74
  4. Step 4: Simplify right side
    353,860.81x = 92,151,600,913.04
  5. Step 5: Solve for x
    x = 92,151,600,913.04/353,860.81
  6. Step 6: Final answer
    x = 260,417.65

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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.