Home / 199,702,506.40-299,586,937.20-78,537,911.20

Finding the Fourth Proportional to 199,702,506.40, 299,586,937.20 and 78,537,911.20

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Solution

The fourth proportional to 199,702,506.40, 299,586,937.20 and 78,537,911.20 is: 117,819,914.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,702,506.40 : 299,586,937.20 = 78,537,911.20 : x
  2. Step 2: Convert to fraction form
    199,702,506.40/299,586,937.20 = 78,537,911.20/x
  3. Step 3: Cross multiply
    199,702,506.40x = 299,586,937.20 × 78,537,911.20
  4. Step 4: Simplify right side
    199,702,506.40x = 23,528,932,270,493,576
  5. Step 5: Solve for x
    x = 23,528,932,270,493,576/199,702,506.40
  6. Step 6: Final answer
    x = 117,819,914.71

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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.