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Finding the Fourth Proportional to 416,280.60, 623,764.80 and 349,358.40

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Solution

The fourth proportional to 416,280.60, 623,764.80 and 349,358.40 is: 523,486.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,280.60 : 623,764.80 = 349,358.40 : x
  2. Step 2: Convert to fraction form
    416,280.60/623,764.80 = 349,358.40/x
  3. Step 3: Cross multiply
    416,280.60x = 623,764.80 × 349,358.40
  4. Step 4: Simplify right side
    416,280.60x = 217,917,472,504.32
  5. Step 5: Solve for x
    x = 217,917,472,504.32/416,280.60
  6. Step 6: Final answer
    x = 523,486.98

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1.5x scale

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.