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Finding the Fourth Proportional to 456,431.90, 683,663.70 and 456,431.90

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Solution

The fourth proportional to 456,431.90, 683,663.70 and 456,431.90 is: 683,663.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,431.90 : 683,663.70 = 456,431.90 : x
  2. Step 2: Convert to fraction form
    456,431.90/683,663.70 = 456,431.90/x
  3. Step 3: Cross multiply
    456,431.90x = 683,663.70 × 456,431.90
  4. Step 4: Simplify right side
    456,431.90x = 312,045,921,552.03
  5. Step 5: Solve for x
    x = 312,045,921,552.03/456,431.90
  6. Step 6: Final answer
    x = 683,663.70

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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.