Home / 193,428,599.20-290,142,898.80-128,521,938.40

Finding the Fourth Proportional to 193,428,599.20, 290,142,898.80 and 128,521,938.40

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Solution

The fourth proportional to 193,428,599.20, 290,142,898.80 and 128,521,938.40 is: 192,782,907.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,428,599.20 : 290,142,898.80 = 128,521,938.40 : x
  2. Step 2: Convert to fraction form
    193,428,599.20/290,142,898.80 = 128,521,938.40/x
  3. Step 3: Cross multiply
    193,428,599.20x = 290,142,898.80 × 128,521,938.40
  4. Step 4: Simplify right side
    193,428,599.20x = 37,289,727,766,771,040
  5. Step 5: Solve for x
    x = 37,289,727,766,771,040/193,428,599.20
  6. Step 6: Final answer
    x = 192,782,907.60

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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.