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Finding the Fourth Proportional to 261,401.10, 392,101.65 and 246,885.90

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Solution

The fourth proportional to 261,401.10, 392,101.65 and 246,885.90 is: 370,328.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,401.10 : 392,101.65 = 246,885.90 : x
  2. Step 2: Convert to fraction form
    261,401.10/392,101.65 = 246,885.90/x
  3. Step 3: Cross multiply
    261,401.10x = 392,101.65 × 246,885.90
  4. Step 4: Simplify right side
    261,401.10x = 96,804,368,751.74
  5. Step 5: Solve for x
    x = 96,804,368,751.74/261,401.10
  6. Step 6: Final answer
    x = 370,328.85

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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.