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Finding the Fourth Proportional to 58,286.90, 87,430.35 and 57,314.90

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Solution

The fourth proportional to 58,286.90, 87,430.35 and 57,314.90 is: 85,972.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,286.90 : 87,430.35 = 57,314.90 : x
  2. Step 2: Convert to fraction form
    58,286.90/87,430.35 = 57,314.90/x
  3. Step 3: Cross multiply
    58,286.90x = 87,430.35 × 57,314.90
  4. Step 4: Simplify right side
    58,286.90x = 5,011,061,767.22
  5. Step 5: Solve for x
    x = 5,011,061,767.22/58,286.90
  6. Step 6: Final answer
    x = 85,972.35

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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.