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Finding the Fourth Proportional to 700,416.16, 966,578.20 and 398,610.16

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Solution

The fourth proportional to 700,416.16, 966,578.20 and 398,610.16 is: 550,084.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,416.16 : 966,578.20 = 398,610.16 : x
  2. Step 2: Convert to fraction form
    700,416.16/966,578.20 = 398,610.16/x
  3. Step 3: Cross multiply
    700,416.16x = 966,578.20 × 398,610.16
  4. Step 4: Simplify right side
    700,416.16x = 385,287,890,954.51
  5. Step 5: Solve for x
    x = 385,287,890,954.51/700,416.16
  6. Step 6: Final answer
    x = 550,084.24

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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.