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Finding the Fourth Proportional to 355,237.80, 532,856.70 and 316,530.60

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Solution

The fourth proportional to 355,237.80, 532,856.70 and 316,530.60 is: 474,795.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,237.80 : 532,856.70 = 316,530.60 : x
  2. Step 2: Convert to fraction form
    355,237.80/532,856.70 = 316,530.60/x
  3. Step 3: Cross multiply
    355,237.80x = 532,856.70 × 316,530.60
  4. Step 4: Simplify right side
    355,237.80x = 168,665,450,965.02
  5. Step 5: Solve for x
    x = 168,665,450,965.02/355,237.80
  6. Step 6: Final answer
    x = 474,795.90

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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.