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Finding the Fourth Proportional to 261,785.20, 392,677.80 and 227,570.80

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Solution

The fourth proportional to 261,785.20, 392,677.80 and 227,570.80 is: 341,356.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,785.20 : 392,677.80 = 227,570.80 : x
  2. Step 2: Convert to fraction form
    261,785.20/392,677.80 = 227,570.80/x
  3. Step 3: Cross multiply
    261,785.20x = 392,677.80 × 227,570.80
  4. Step 4: Simplify right side
    261,785.20x = 89,362,001,088.24
  5. Step 5: Solve for x
    x = 89,362,001,088.24/261,785.20
  6. Step 6: Final answer
    x = 341,356.20

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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.