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Finding the Fourth Proportional to 61,961.68, 85,504.80 and 33,666.40

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Solution

The fourth proportional to 61,961.68, 85,504.80 and 33,666.40 is: 46,458.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,961.68 : 85,504.80 = 33,666.40 : x
  2. Step 2: Convert to fraction form
    61,961.68/85,504.80 = 33,666.40/x
  3. Step 3: Cross multiply
    61,961.68x = 85,504.80 × 33,666.40
  4. Step 4: Simplify right side
    61,961.68x = 2,878,638,798.72
  5. Step 5: Solve for x
    x = 2,878,638,798.72/61,961.68
  6. Step 6: Final answer
    x = 46,458.37

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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.