Home / 128,736,020.80-193,104,031.20-31,690,957.60

Finding the Fourth Proportional to 128,736,020.80, 193,104,031.20 and 31,690,957.60

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Solution

The fourth proportional to 128,736,020.80, 193,104,031.20 and 31,690,957.60 is: 47,536,436.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,736,020.80 : 193,104,031.20 = 31,690,957.60 : x
  2. Step 2: Convert to fraction form
    128,736,020.80/193,104,031.20 = 31,690,957.60/x
  3. Step 3: Cross multiply
    128,736,020.80x = 193,104,031.20 × 31,690,957.60
  4. Step 4: Simplify right side
    128,736,020.80x = 6,119,651,665,148,277
  5. Step 5: Solve for x
    x = 6,119,651,665,148,277/128,736,020.80
  6. Step 6: Final answer
    x = 47,536,436.40

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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.