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Finding the Fourth Proportional to 153,145.74, 211,360.11 and 86,077.74

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Solution

The fourth proportional to 153,145.74, 211,360.11 and 86,077.74 is: 118,797.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,145.74 : 211,360.11 = 86,077.74 : x
  2. Step 2: Convert to fraction form
    153,145.74/211,360.11 = 86,077.74/x
  3. Step 3: Cross multiply
    153,145.74x = 211,360.11 × 86,077.74
  4. Step 4: Simplify right side
    153,145.74x = 18,193,400,594.95
  5. Step 5: Solve for x
    x = 18,193,400,594.95/153,145.74
  6. Step 6: Final answer
    x = 118,797.95

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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.