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Finding the Fourth Proportional to 461,527.80, 636,940.32 and 257,618.40

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Solution

The fourth proportional to 461,527.80, 636,940.32 and 257,618.40 is: 355,531.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,527.80 : 636,940.32 = 257,618.40 : x
  2. Step 2: Convert to fraction form
    461,527.80/636,940.32 = 257,618.40/x
  3. Step 3: Cross multiply
    461,527.80x = 636,940.32 × 257,618.40
  4. Step 4: Simplify right side
    461,527.80x = 164,087,546,133.89
  5. Step 5: Solve for x
    x = 164,087,546,133.89/461,527.80
  6. Step 6: Final answer
    x = 355,531.23

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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.