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Finding the Fourth Proportional to 30,981.55, 46,472.48 and 7,607.99

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Solution

The fourth proportional to 30,981.55, 46,472.48 and 7,607.99 is: 11,412.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,981.55 : 46,472.48 = 7,607.99 : x
  2. Step 2: Convert to fraction form
    30,981.55/46,472.48 = 7,607.99/x
  3. Step 3: Cross multiply
    30,981.55x = 46,472.48 × 7,607.99
  4. Step 4: Simplify right side
    30,981.55x = 353,562,125.08
  5. Step 5: Solve for x
    x = 353,562,125.08/30,981.55
  6. Step 6: Final answer
    x = 11,412.02

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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.