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Finding the Fourth Proportional to 261,134.30, 358,018.47 and 256,410.38

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Solution

The fourth proportional to 261,134.30, 358,018.47 and 256,410.38 is: 351,541.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,134.30 : 358,018.47 = 256,410.38 : x
  2. Step 2: Convert to fraction form
    261,134.30/358,018.47 = 256,410.38/x
  3. Step 3: Cross multiply
    261,134.30x = 358,018.47 × 256,410.38
  4. Step 4: Simplify right side
    261,134.30x = 91,799,652,834.76
  5. Step 5: Solve for x
    x = 91,799,652,834.76/261,134.30
  6. Step 6: Final answer
    x = 351,541.92

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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.