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Finding the Fourth Proportional to 407,528.10, 611,292.15 and 141,200.10

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Solution

The fourth proportional to 407,528.10, 611,292.15 and 141,200.10 is: 211,800.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,528.10 : 611,292.15 = 141,200.10 : x
  2. Step 2: Convert to fraction form
    407,528.10/611,292.15 = 141,200.10/x
  3. Step 3: Cross multiply
    407,528.10x = 611,292.15 × 141,200.10
  4. Step 4: Simplify right side
    407,528.10x = 86,314,512,709.22
  5. Step 5: Solve for x
    x = 86,314,512,709.22/407,528.10
  6. Step 6: Final answer
    x = 211,800.15

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Similar ratio
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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.