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Finding the Fourth Proportional to 438,518.25, 605,155.20 and 237,314.25

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Solution

The fourth proportional to 438,518.25, 605,155.20 and 237,314.25 is: 327,493.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,518.25 : 605,155.20 = 237,314.25 : x
  2. Step 2: Convert to fraction form
    438,518.25/605,155.20 = 237,314.25/x
  3. Step 3: Cross multiply
    438,518.25x = 605,155.20 × 237,314.25
  4. Step 4: Simplify right side
    438,518.25x = 143,611,952,421.60
  5. Step 5: Solve for x
    x = 143,611,952,421.60/438,518.25
  6. Step 6: Final answer
    x = 327,493.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.