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Finding the Fourth Proportional to 298,298.72, 411,653.60 and 170,981.76

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Solution

The fourth proportional to 298,298.72, 411,653.60 and 170,981.76 is: 235,955.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,298.72 : 411,653.60 = 170,981.76 : x
  2. Step 2: Convert to fraction form
    298,298.72/411,653.60 = 170,981.76/x
  3. Step 3: Cross multiply
    298,298.72x = 411,653.60 × 170,981.76
  4. Step 4: Simplify right side
    298,298.72x = 70,385,257,038.34
  5. Step 5: Solve for x
    x = 70,385,257,038.34/298,298.72
  6. Step 6: Final answer
    x = 235,955.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.