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Finding the Fourth Proportional to 58,505.06, 87,703.74 and 31,812.06

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Solution

The fourth proportional to 58,505.06, 87,703.74 and 31,812.06 is: 47,688.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,505.06 : 87,703.74 = 31,812.06 : x
  2. Step 2: Convert to fraction form
    58,505.06/87,703.74 = 31,812.06/x
  3. Step 3: Cross multiply
    58,505.06x = 87,703.74 × 31,812.06
  4. Step 4: Simplify right side
    58,505.06x = 2,790,036,639.10
  5. Step 5: Solve for x
    x = 2,790,036,639.10/58,505.06
  6. Step 6: Final answer
    x = 47,688.81

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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.