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Finding the Fourth Proportional to 335,814.60, 503,721.90 and 316,115.40

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Solution

The fourth proportional to 335,814.60, 503,721.90 and 316,115.40 is: 474,173.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,814.60 : 503,721.90 = 316,115.40 : x
  2. Step 2: Convert to fraction form
    335,814.60/503,721.90 = 316,115.40/x
  3. Step 3: Cross multiply
    335,814.60x = 503,721.90 × 316,115.40
  4. Step 4: Simplify right side
    335,814.60x = 159,234,249,907.26
  5. Step 5: Solve for x
    x = 159,234,249,907.26/335,814.60
  6. Step 6: Final answer
    x = 474,173.10

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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.