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Finding the Fourth Proportional to 76,590.36, 105,700.95 and 53,622.68

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Solution

The fourth proportional to 76,590.36, 105,700.95 and 53,622.68 is: 74,003.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,590.36 : 105,700.95 = 53,622.68 : x
  2. Step 2: Convert to fraction form
    76,590.36/105,700.95 = 53,622.68/x
  3. Step 3: Cross multiply
    76,590.36x = 105,700.95 × 53,622.68
  4. Step 4: Simplify right side
    76,590.36x = 5,667,967,689.04
  5. Step 5: Solve for x
    x = 5,667,967,689.04/76,590.36
  6. Step 6: Final answer
    x = 74,003.67

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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.