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Finding the Fourth Proportional to 139,315.07, 192,253.11 and 75,653.32

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Solution

The fourth proportional to 139,315.07, 192,253.11 and 75,653.32 is: 104,400.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,315.07 : 192,253.11 = 75,653.32 : x
  2. Step 2: Convert to fraction form
    139,315.07/192,253.11 = 75,653.32/x
  3. Step 3: Cross multiply
    139,315.07x = 192,253.11 × 75,653.32
  4. Step 4: Simplify right side
    139,315.07x = 14,544,586,051.83
  5. Step 5: Solve for x
    x = 14,544,586,051.83/139,315.07
  6. Step 6: Final answer
    x = 104,400.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.