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Finding the Fourth Proportional to 217,223,603.60, 325,835,405.40 and 73,616,435.60

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Solution

The fourth proportional to 217,223,603.60, 325,835,405.40 and 73,616,435.60 is: 110,424,653.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,223,603.60 : 325,835,405.40 = 73,616,435.60 : x
  2. Step 2: Convert to fraction form
    217,223,603.60/325,835,405.40 = 73,616,435.60/x
  3. Step 3: Cross multiply
    217,223,603.60x = 325,835,405.40 × 73,616,435.60
  4. Step 4: Simplify right side
    217,223,603.60x = 23,986,841,137,828,988
  5. Step 5: Solve for x
    x = 23,986,841,137,828,988/217,223,603.60
  6. Step 6: Final answer
    x = 110,424,653.40

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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.