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Finding the Fourth Proportional to 122,627.34, 169,271.98 and 71,656.64

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Solution

The fourth proportional to 122,627.34, 169,271.98 and 71,656.64 is: 98,913.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,627.34 : 169,271.98 = 71,656.64 : x
  2. Step 2: Convert to fraction form
    122,627.34/169,271.98 = 71,656.64/x
  3. Step 3: Cross multiply
    122,627.34x = 169,271.98 × 71,656.64
  4. Step 4: Simplify right side
    122,627.34x = 12,129,461,775.35
  5. Step 5: Solve for x
    x = 12,129,461,775.35/122,627.34
  6. Step 6: Final answer
    x = 98,913.19

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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.