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Finding the Fourth Proportional to 122,708.76, 183,931.60 and 63,484.80

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Solution

The fourth proportional to 122,708.76, 183,931.60 and 63,484.80 is: 95,159.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,708.76 : 183,931.60 = 63,484.80 : x
  2. Step 2: Convert to fraction form
    122,708.76/183,931.60 = 63,484.80/x
  3. Step 3: Cross multiply
    122,708.76x = 183,931.60 × 63,484.80
  4. Step 4: Simplify right side
    122,708.76x = 11,676,860,839.68
  5. Step 5: Solve for x
    x = 11,676,860,839.68/122,708.76
  6. Step 6: Final answer
    x = 95,159.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.