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Finding the Fourth Proportional to 196,705.80, 295,058.70 and 117,779.40

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Solution

The fourth proportional to 196,705.80, 295,058.70 and 117,779.40 is: 176,669.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,705.80 : 295,058.70 = 117,779.40 : x
  2. Step 2: Convert to fraction form
    196,705.80/295,058.70 = 117,779.40/x
  3. Step 3: Cross multiply
    196,705.80x = 295,058.70 × 117,779.40
  4. Step 4: Simplify right side
    196,705.80x = 34,751,836,650.78
  5. Step 5: Solve for x
    x = 34,751,836,650.78/196,705.80
  6. Step 6: Final answer
    x = 176,669.10

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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.