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Finding the Fourth Proportional to 354,244.95, 531,482.31 and 212,068.08

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Solution

The fourth proportional to 354,244.95, 531,482.31 and 212,068.08 is: 318,170.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,244.95 : 531,482.31 = 212,068.08 : x
  2. Step 2: Convert to fraction form
    354,244.95/531,482.31 = 212,068.08/x
  3. Step 3: Cross multiply
    354,244.95x = 531,482.31 × 212,068.08
  4. Step 4: Simplify right side
    354,244.95x = 112,710,433,035.67
  5. Step 5: Solve for x
    x = 112,710,433,035.67/354,244.95
  6. Step 6: Final answer
    x = 318,170.90

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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.