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Finding the Fourth Proportional to 261,674.70, 392,416.86 and 111,925.94

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Solution

The fourth proportional to 261,674.70, 392,416.86 and 111,925.94 is: 167,848.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,674.70 : 392,416.86 = 111,925.94 : x
  2. Step 2: Convert to fraction form
    261,674.70/392,416.86 = 111,925.94/x
  3. Step 3: Cross multiply
    261,674.70x = 392,416.86 × 111,925.94
  4. Step 4: Simplify right side
    261,674.70x = 43,921,625,927.35
  5. Step 5: Solve for x
    x = 43,921,625,927.35/261,674.70
  6. Step 6: Final answer
    x = 167,848.19

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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.