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Finding the Fourth Proportional to 117,421.50, 162,042.08 and 63,706.76

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Solution

The fourth proportional to 117,421.50, 162,042.08 and 63,706.76 is: 87,915.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,421.50 : 162,042.08 = 63,706.76 : x
  2. Step 2: Convert to fraction form
    117,421.50/162,042.08 = 63,706.76/x
  3. Step 3: Cross multiply
    117,421.50x = 162,042.08 × 63,706.76
  4. Step 4: Simplify right side
    117,421.50x = 10,323,174,771.72
  5. Step 5: Solve for x
    x = 10,323,174,771.72/117,421.50
  6. Step 6: Final answer
    x = 87,915.54

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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.