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Finding the Fourth Proportional to 153,185.58, 211,394.07 and 86,117.58

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Solution

The fourth proportional to 153,185.58, 211,394.07 and 86,117.58 is: 118,841.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,185.58 : 211,394.07 = 86,117.58 : x
  2. Step 2: Convert to fraction form
    153,185.58/211,394.07 = 86,117.58/x
  3. Step 3: Cross multiply
    153,185.58x = 211,394.07 × 86,117.58
  4. Step 4: Simplify right side
    153,185.58x = 18,204,745,734.75
  5. Step 5: Solve for x
    x = 18,204,745,734.75/153,185.58
  6. Step 6: Final answer
    x = 118,841.12

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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.