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Finding the Fourth Proportional to 693,986.92, 957,709.38 and 407,510.44

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Solution

The fourth proportional to 693,986.92, 957,709.38 and 407,510.44 is: 562,368.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,986.92 : 957,709.38 = 407,510.44 : x
  2. Step 2: Convert to fraction form
    693,986.92/957,709.38 = 407,510.44/x
  3. Step 3: Cross multiply
    693,986.92x = 957,709.38 × 407,510.44
  4. Step 4: Simplify right side
    693,986.92x = 390,276,570,835.93
  5. Step 5: Solve for x
    x = 390,276,570,835.93/693,986.92
  6. Step 6: Final answer
    x = 562,368.77

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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.