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Finding the Fourth Proportional to 261,888.74, 361,394.81 and 153,003.18

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Solution

The fourth proportional to 261,888.74, 361,394.81 and 153,003.18 is: 211,137.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,888.74 : 361,394.81 = 153,003.18 : x
  2. Step 2: Convert to fraction form
    261,888.74/361,394.81 = 153,003.18/x
  3. Step 3: Cross multiply
    261,888.74x = 361,394.81 × 153,003.18
  4. Step 4: Simplify right side
    261,888.74x = 55,294,555,157.27
  5. Step 5: Solve for x
    x = 55,294,555,157.27/261,888.74
  6. Step 6: Final answer
    x = 211,137.58

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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.