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Finding the Fourth Proportional to 936,364.60, 1,405,032.90 and 437,728.60

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Solution

The fourth proportional to 936,364.60, 1,405,032.90 and 437,728.60 is: 656,820.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    936,364.60 : 1,405,032.90 = 437,728.60 : x
  2. Step 2: Convert to fraction form
    936,364.60/1,405,032.90 = 437,728.60/x
  3. Step 3: Cross multiply
    936,364.60x = 1,405,032.90 × 437,728.60
  4. Step 4: Simplify right side
    936,364.60x = 615,023,084,270.94
  5. Step 5: Solve for x
    x = 615,023,084,270.94/936,364.60
  6. Step 6: Final answer
    x = 656,820.09

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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.