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Finding the Fourth Proportional to 665,099.40, 996,554.70 and 384,126.60

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Solution

The fourth proportional to 665,099.40, 996,554.70 and 384,126.60 is: 575,557.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,099.40 : 996,554.70 = 384,126.60 : x
  2. Step 2: Convert to fraction form
    665,099.40/996,554.70 = 384,126.60/x
  3. Step 3: Cross multiply
    665,099.40x = 996,554.70 × 384,126.60
  4. Step 4: Simplify right side
    665,099.40x = 382,803,168,625.02
  5. Step 5: Solve for x
    x = 382,803,168,625.02/665,099.40
  6. Step 6: Final answer
    x = 575,557.83

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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.