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Finding the Fourth Proportional to 572,026, 789,191.76 and 357,084.40

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Solution

The fourth proportional to 572,026, 789,191.76 and 357,084.40 is: 492,649.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,026 : 789,191.76 = 357,084.40 : x
  2. Step 2: Convert to fraction form
    572,026/789,191.76 = 357,084.40/x
  3. Step 3: Cross multiply
    572,026x = 789,191.76 × 357,084.40
  4. Step 4: Simplify right side
    572,026x = 281,808,066,104.54
  5. Step 5: Solve for x
    x = 281,808,066,104.54/572,026
  6. Step 6: Final answer
    x = 492,649.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.