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Finding the Fourth Proportional to 561,101.20, 841,651.80 and 161,706.40

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Solution

The fourth proportional to 561,101.20, 841,651.80 and 161,706.40 is: 242,559.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,101.20 : 841,651.80 = 161,706.40 : x
  2. Step 2: Convert to fraction form
    561,101.20/841,651.80 = 161,706.40/x
  3. Step 3: Cross multiply
    561,101.20x = 841,651.80 × 161,706.40
  4. Step 4: Simplify right side
    561,101.20x = 136,100,482,631.52
  5. Step 5: Solve for x
    x = 136,100,482,631.52/561,101.20
  6. Step 6: Final answer
    x = 242,559.60

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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.