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Finding the Fourth Proportional to 35,880.70, 53,811.45 and 12,504.70

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Solution

The fourth proportional to 35,880.70, 53,811.45 and 12,504.70 is: 18,753.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,880.70 : 53,811.45 = 12,504.70 : x
  2. Step 2: Convert to fraction form
    35,880.70/53,811.45 = 12,504.70/x
  3. Step 3: Cross multiply
    35,880.70x = 53,811.45 × 12,504.70
  4. Step 4: Simplify right side
    35,880.70x = 672,896,038.82
  5. Step 5: Solve for x
    x = 672,896,038.82/35,880.70
  6. Step 6: Final answer
    x = 18,753.70

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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.