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Finding the Fourth Proportional to 567,961.34, 783,646.79 and 347,142.69

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Solution

The fourth proportional to 567,961.34, 783,646.79 and 347,142.69 is: 478,971.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,961.34 : 783,646.79 = 347,142.69 : x
  2. Step 2: Convert to fraction form
    567,961.34/783,646.79 = 347,142.69/x
  3. Step 3: Cross multiply
    567,961.34x = 783,646.79 × 347,142.69
  4. Step 4: Simplify right side
    567,961.34x = 272,037,252,954.75
  5. Step 5: Solve for x
    x = 272,037,252,954.75/567,961.34
  6. Step 6: Final answer
    x = 478,971.43

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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.