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Finding the Fourth Proportional to 356,925.60, 535,129.20 and 146,455.20

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Solution

The fourth proportional to 356,925.60, 535,129.20 and 146,455.20 is: 219,576.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,925.60 : 535,129.20 = 146,455.20 : x
  2. Step 2: Convert to fraction form
    356,925.60/535,129.20 = 146,455.20/x
  3. Step 3: Cross multiply
    356,925.60x = 535,129.20 × 146,455.20
  4. Step 4: Simplify right side
    356,925.60x = 78,372,454,011.84
  5. Step 5: Solve for x
    x = 78,372,454,011.84/356,925.60
  6. Step 6: Final answer
    x = 219,576.44

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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.