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Finding the Fourth Proportional to 613,071.40, 919,607.10 and 169,839.40

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Solution

The fourth proportional to 613,071.40, 919,607.10 and 169,839.40 is: 254,759.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,071.40 : 919,607.10 = 169,839.40 : x
  2. Step 2: Convert to fraction form
    613,071.40/919,607.10 = 169,839.40/x
  3. Step 3: Cross multiply
    613,071.40x = 919,607.10 × 169,839.40
  4. Step 4: Simplify right side
    613,071.40x = 156,185,518,099.74
  5. Step 5: Solve for x
    x = 156,185,518,099.74/613,071.40
  6. Step 6: Final answer
    x = 254,759.10

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Similar ratio
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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.