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Finding the Fourth Proportional to 261,154.94, 358,046.73 and 256,431.02

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Solution

The fourth proportional to 261,154.94, 358,046.73 and 256,431.02 is: 351,570.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,154.94 : 358,046.73 = 256,431.02 : x
  2. Step 2: Convert to fraction form
    261,154.94/358,046.73 = 256,431.02/x
  3. Step 3: Cross multiply
    261,154.94x = 358,046.73 × 256,431.02
  4. Step 4: Simplify right side
    261,154.94x = 91,814,286,391.33
  5. Step 5: Solve for x
    x = 91,814,286,391.33/261,154.94
  6. Step 6: Final answer
    x = 351,570.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.