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Finding the Fourth Proportional to 73,590.10, 110,385.15 and 65,986.90

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Solution

The fourth proportional to 73,590.10, 110,385.15 and 65,986.90 is: 98,980.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,590.10 : 110,385.15 = 65,986.90 : x
  2. Step 2: Convert to fraction form
    73,590.10/110,385.15 = 65,986.90/x
  3. Step 3: Cross multiply
    73,590.10x = 110,385.15 × 65,986.90
  4. Step 4: Simplify right side
    73,590.10x = 7,283,973,854.54
  5. Step 5: Solve for x
    x = 7,283,973,854.54/73,590.10
  6. Step 6: Final answer
    x = 98,980.35

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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.