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Finding the Fourth Proportional to 492,688.60, 738,803.25 and 255,967.72

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Solution

The fourth proportional to 492,688.60, 738,803.25 and 255,967.72 is: 383,832.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,688.60 : 738,803.25 = 255,967.72 : x
  2. Step 2: Convert to fraction form
    492,688.60/738,803.25 = 255,967.72/x
  3. Step 3: Cross multiply
    492,688.60x = 738,803.25 × 255,967.72
  4. Step 4: Simplify right side
    492,688.60x = 189,109,779,737.07
  5. Step 5: Solve for x
    x = 189,109,779,737.07/492,688.60
  6. Step 6: Final answer
    x = 383,832.27

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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.