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Finding the Fourth Proportional to 266,111.20, 398,510.70 and 176,881.60

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Solution

The fourth proportional to 266,111.20, 398,510.70 and 176,881.60 is: 264,886.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,111.20 : 398,510.70 = 176,881.60 : x
  2. Step 2: Convert to fraction form
    266,111.20/398,510.70 = 176,881.60/x
  3. Step 3: Cross multiply
    266,111.20x = 398,510.70 × 176,881.60
  4. Step 4: Simplify right side
    266,111.20x = 70,489,210,233.12
  5. Step 5: Solve for x
    x = 70,489,210,233.12/266,111.20
  6. Step 6: Final answer
    x = 264,886.30

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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.