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Finding the Fourth Proportional to 56,673.72, 78,210.72 and 31,181.04

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Solution

The fourth proportional to 56,673.72, 78,210.72 and 31,181.04 is: 43,030.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,673.72 : 78,210.72 = 31,181.04 : x
  2. Step 2: Convert to fraction form
    56,673.72/78,210.72 = 31,181.04/x
  3. Step 3: Cross multiply
    56,673.72x = 78,210.72 × 31,181.04
  4. Step 4: Simplify right side
    56,673.72x = 2,438,691,588.75
  5. Step 5: Solve for x
    x = 2,438,691,588.75/56,673.72
  6. Step 6: Final answer
    x = 43,030.38

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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.