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Finding the Fourth Proportional to 455,690.48, 683,554.56 and 156,376.80

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Solution

The fourth proportional to 455,690.48, 683,554.56 and 156,376.80 is: 234,571.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,690.48 : 683,554.56 = 156,376.80 : x
  2. Step 2: Convert to fraction form
    455,690.48/683,554.56 = 156,376.80/x
  3. Step 3: Cross multiply
    455,690.48x = 683,554.56 × 156,376.80
  4. Step 4: Simplify right side
    455,690.48x = 106,892,074,718.21
  5. Step 5: Solve for x
    x = 106,892,074,718.21/455,690.48
  6. Step 6: Final answer
    x = 234,571.67

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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.