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Finding the Fourth Proportional to 196,071.78, 294,135.21 and 77,755.08

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Solution

The fourth proportional to 196,071.78, 294,135.21 and 77,755.08 is: 116,643.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,071.78 : 294,135.21 = 77,755.08 : x
  2. Step 2: Convert to fraction form
    196,071.78/294,135.21 = 77,755.08/x
  3. Step 3: Cross multiply
    196,071.78x = 294,135.21 × 77,755.08
  4. Step 4: Simplify right side
    196,071.78x = 22,870,506,784.37
  5. Step 5: Solve for x
    x = 22,870,506,784.37/196,071.78
  6. Step 6: Final answer
    x = 116,643.54

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1.5x scale

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.