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Finding the Fourth Proportional to 19,315,935.70, 28,973,903.55 and 19,315,935.70

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Solution

The fourth proportional to 19,315,935.70, 28,973,903.55 and 19,315,935.70 is: 28,973,903.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,315,935.70 : 28,973,903.55 = 19,315,935.70 : x
  2. Step 2: Convert to fraction form
    19,315,935.70/28,973,903.55 = 19,315,935.70/x
  3. Step 3: Cross multiply
    19,315,935.70x = 28,973,903.55 × 19,315,935.70
  4. Step 4: Simplify right side
    19,315,935.70x = 559,658,057,949,801.75
  5. Step 5: Solve for x
    x = 559,658,057,949,801.75/19,315,935.70
  6. Step 6: Final answer
    x = 28,973,903.55

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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.