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Finding the Fourth Proportional to 411,525.42, 617,347.28 and 127,238.15

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Solution

The fourth proportional to 411,525.42, 617,347.28 and 127,238.15 is: 190,875.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,525.42 : 617,347.28 = 127,238.15 : x
  2. Step 2: Convert to fraction form
    411,525.42/617,347.28 = 127,238.15/x
  3. Step 3: Cross multiply
    411,525.42x = 617,347.28 × 127,238.15
  4. Step 4: Simplify right side
    411,525.42x = 78,550,122,728.00
  5. Step 5: Solve for x
    x = 78,550,122,728.00/411,525.42
  6. Step 6: Final answer
    x = 190,875.51

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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.