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Finding the Fourth Proportional to 56,937.90, 85,459.10 and 28,877.48

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Solution

The fourth proportional to 56,937.90, 85,459.10 and 28,877.48 is: 43,342.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,937.90 : 85,459.10 = 28,877.48 : x
  2. Step 2: Convert to fraction form
    56,937.90/85,459.10 = 28,877.48/x
  3. Step 3: Cross multiply
    56,937.90x = 85,459.10 × 28,877.48
  4. Step 4: Simplify right side
    56,937.90x = 2,467,843,451.07
  5. Step 5: Solve for x
    x = 2,467,843,451.07/56,937.90
  6. Step 6: Final answer
    x = 43,342.72

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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.