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Finding the Fourth Proportional to 356,800.40, 535,272.60 and 104,080.40

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Solution

The fourth proportional to 356,800.40, 535,272.60 and 104,080.40 is: 156,141.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,800.40 : 535,272.60 = 104,080.40 : x
  2. Step 2: Convert to fraction form
    356,800.40/535,272.60 = 104,080.40/x
  3. Step 3: Cross multiply
    356,800.40x = 535,272.60 × 104,080.40
  4. Step 4: Simplify right side
    356,800.40x = 55,711,386,317.04
  5. Step 5: Solve for x
    x = 55,711,386,317.04/356,800.40
  6. Step 6: Final answer
    x = 156,141.60

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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.