Home / 129,038,540.80-193,557,811.20-64,541,286.40

Finding the Fourth Proportional to 129,038,540.80, 193,557,811.20 and 64,541,286.40

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Solution

The fourth proportional to 129,038,540.80, 193,557,811.20 and 64,541,286.40 is: 96,811,929.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,038,540.80 : 193,557,811.20 = 64,541,286.40 : x
  2. Step 2: Convert to fraction form
    129,038,540.80/193,557,811.20 = 64,541,286.40/x
  3. Step 3: Cross multiply
    129,038,540.80x = 193,557,811.20 × 64,541,286.40
  4. Step 4: Simplify right side
    129,038,540.80x = 12,492,470,127,616,326
  5. Step 5: Solve for x
    x = 12,492,470,127,616,326/129,038,540.80
  6. Step 6: Final answer
    x = 96,811,929.60

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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.