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Finding the Fourth Proportional to 522,520.32, 783,688.21 and 238,143.34

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Solution

The fourth proportional to 522,520.32, 783,688.21 and 238,143.34 is: 357,172.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,520.32 : 783,688.21 = 238,143.34 : x
  2. Step 2: Convert to fraction form
    522,520.32/783,688.21 = 238,143.34/x
  3. Step 3: Cross multiply
    522,520.32x = 783,688.21 × 238,143.34
  4. Step 4: Simplify right side
    522,520.32x = 186,630,129,571.83
  5. Step 5: Solve for x
    x = 186,630,129,571.83/522,520.32
  6. Step 6: Final answer
    x = 357,172.96

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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.