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Finding the Fourth Proportional to 61,322.70, 84,590.64 and 38,622.63

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Solution

The fourth proportional to 61,322.70, 84,590.64 and 38,622.63 is: 53,277.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,322.70 : 84,590.64 = 38,622.63 : x
  2. Step 2: Convert to fraction form
    61,322.70/84,590.64 = 38,622.63/x
  3. Step 3: Cross multiply
    61,322.70x = 84,590.64 × 38,622.63
  4. Step 4: Simplify right side
    61,322.70x = 3,267,112,990.18
  5. Step 5: Solve for x
    x = 3,267,112,990.18/61,322.70
  6. Step 6: Final answer
    x = 53,277.38

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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.