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Finding the Fourth Proportional to 443,966.40, 612,243.36 and 375,978.24

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Solution

The fourth proportional to 443,966.40, 612,243.36 and 375,978.24 is: 518,485.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,966.40 : 612,243.36 = 375,978.24 : x
  2. Step 2: Convert to fraction form
    443,966.40/612,243.36 = 375,978.24/x
  3. Step 3: Cross multiply
    443,966.40x = 612,243.36 × 375,978.24
  4. Step 4: Simplify right side
    443,966.40x = 230,190,180,944.49
  5. Step 5: Solve for x
    x = 230,190,180,944.49/443,966.40
  6. Step 6: Final answer
    x = 518,485.59

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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.