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Finding the Fourth Proportional to 561,106.70, 841,660.05 and 280,522.70

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Solution

The fourth proportional to 561,106.70, 841,660.05 and 280,522.70 is: 420,784.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,106.70 : 841,660.05 = 280,522.70 : x
  2. Step 2: Convert to fraction form
    561,106.70/841,660.05 = 280,522.70/x
  3. Step 3: Cross multiply
    561,106.70x = 841,660.05 × 280,522.70
  4. Step 4: Simplify right side
    561,106.70x = 236,104,749,708.14
  5. Step 5: Solve for x
    x = 236,104,749,708.14/561,106.70
  6. Step 6: Final answer
    x = 420,784.05

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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.