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Finding the Fourth Proportional to 285,681.61, 394,232.08 and 156,615.67

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Solution

The fourth proportional to 285,681.61, 394,232.08 and 156,615.67 is: 216,124.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,681.61 : 394,232.08 = 156,615.67 : x
  2. Step 2: Convert to fraction form
    285,681.61/394,232.08 = 156,615.67/x
  3. Step 3: Cross multiply
    285,681.61x = 394,232.08 × 156,615.67
  4. Step 4: Simplify right side
    285,681.61x = 61,742,921,344.69
  5. Step 5: Solve for x
    x = 61,742,921,344.69/285,681.61
  6. Step 6: Final answer
    x = 216,124.94

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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.