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Finding the Fourth Proportional to 75,810.60, 113,715.90 and 61,048.35

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Solution

The fourth proportional to 75,810.60, 113,715.90 and 61,048.35 is: 91,572.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,810.60 : 113,715.90 = 61,048.35 : x
  2. Step 2: Convert to fraction form
    75,810.60/113,715.90 = 61,048.35/x
  3. Step 3: Cross multiply
    75,810.60x = 113,715.90 × 61,048.35
  4. Step 4: Simplify right side
    75,810.60x = 6,942,168,063.77
  5. Step 5: Solve for x
    x = 6,942,168,063.77/75,810.60
  6. Step 6: Final answer
    x = 91,572.53

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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.