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Finding the Fourth Proportional to 638,988.96, 958,483.44 and 195,699.36

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Solution

The fourth proportional to 638,988.96, 958,483.44 and 195,699.36 is: 293,549.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,988.96 : 958,483.44 = 195,699.36 : x
  2. Step 2: Convert to fraction form
    638,988.96/958,483.44 = 195,699.36/x
  3. Step 3: Cross multiply
    638,988.96x = 958,483.44 × 195,699.36
  4. Step 4: Simplify right side
    638,988.96x = 187,574,595,778.60
  5. Step 5: Solve for x
    x = 187,574,595,778.60/638,988.96
  6. Step 6: Final answer
    x = 293,549.04

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Similar ratio
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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.