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Finding the Fourth Proportional to 718,007.04, 990,809.36 and 395,716.16

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Solution

The fourth proportional to 718,007.04, 990,809.36 and 395,716.16 is: 546,066.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,007.04 : 990,809.36 = 395,716.16 : x
  2. Step 2: Convert to fraction form
    718,007.04/990,809.36 = 395,716.16/x
  3. Step 3: Cross multiply
    718,007.04x = 990,809.36 × 395,716.16
  4. Step 4: Simplify right side
    718,007.04x = 392,079,275,231.26
  5. Step 5: Solve for x
    x = 392,079,275,231.26/718,007.04
  6. Step 6: Final answer
    x = 546,066.06

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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.