Home / 128,482,339.60-192,788,827.80-85,381,526.80

Finding the Fourth Proportional to 128,482,339.60, 192,788,827.80 and 85,381,526.80

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Solution

The fourth proportional to 128,482,339.60, 192,788,827.80 and 85,381,526.80 is: 128,115,696.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,482,339.60 : 192,788,827.80 = 85,381,526.80 : x
  2. Step 2: Convert to fraction form
    128,482,339.60/192,788,827.80 = 85,381,526.80/x
  3. Step 3: Cross multiply
    128,482,339.60x = 192,788,827.80 × 85,381,526.80
  4. Step 4: Simplify right side
    128,482,339.60x = 16,460,604,467,546,286
  5. Step 5: Solve for x
    x = 16,460,604,467,546,286/128,482,339.60
  6. Step 6: Final answer
    x = 128,115,696.82

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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.