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Finding the Fourth Proportional to 56,742.40, 85,113.60 and 37,059.40

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Solution

The fourth proportional to 56,742.40, 85,113.60 and 37,059.40 is: 55,589.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,742.40 : 85,113.60 = 37,059.40 : x
  2. Step 2: Convert to fraction form
    56,742.40/85,113.60 = 37,059.40/x
  3. Step 3: Cross multiply
    56,742.40x = 85,113.60 × 37,059.40
  4. Step 4: Simplify right side
    56,742.40x = 3,154,258,947.84
  5. Step 5: Solve for x
    x = 3,154,258,947.84/56,742.40
  6. Step 6: Final answer
    x = 55,589.10

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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.