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Finding the Fourth Proportional to 443,420.14, 665,125.32 and 127,866.82

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Solution

The fourth proportional to 443,420.14, 665,125.32 and 127,866.82 is: 191,798.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,420.14 : 665,125.32 = 127,866.82 : x
  2. Step 2: Convert to fraction form
    443,420.14/665,125.32 = 127,866.82/x
  3. Step 3: Cross multiply
    443,420.14x = 665,125.32 × 127,866.82
  4. Step 4: Simplify right side
    443,420.14x = 85,047,459,569.88
  5. Step 5: Solve for x
    x = 85,047,459,569.88/443,420.14
  6. Step 6: Final answer
    x = 191,798.82

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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.