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Finding the Fourth Proportional to 451,784.72, 623,705.73 and 348,951.63

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Solution

The fourth proportional to 451,784.72, 623,705.73 and 348,951.63 is: 481,740.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,784.72 : 623,705.73 = 348,951.63 : x
  2. Step 2: Convert to fraction form
    451,784.72/623,705.73 = 348,951.63/x
  3. Step 3: Cross multiply
    451,784.72x = 623,705.73 × 348,951.63
  4. Step 4: Simplify right side
    451,784.72x = 217,643,131,123.84
  5. Step 5: Solve for x
    x = 217,643,131,123.84/451,784.72
  6. Step 6: Final answer
    x = 481,740.80

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1.5x scale

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.