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Finding the Fourth Proportional to 257,522.93, 386,205.35 and 178,071.40

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Solution

The fourth proportional to 257,522.93, 386,205.35 and 178,071.40 is: 267,052.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,522.93 : 386,205.35 = 178,071.40 : x
  2. Step 2: Convert to fraction form
    257,522.93/386,205.35 = 178,071.40/x
  3. Step 3: Cross multiply
    257,522.93x = 386,205.35 × 178,071.40
  4. Step 4: Simplify right side
    257,522.93x = 68,772,127,361.99
  5. Step 5: Solve for x
    x = 68,772,127,361.99/257,522.93
  6. Step 6: Final answer
    x = 267,052.44

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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.