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Finding the Fourth Proportional to 9,712,865.60, 13,617,918.40 and 9,712,865.60

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Solution

The fourth proportional to 9,712,865.60, 13,617,918.40 and 9,712,865.60 is: 13,617,918.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,712,865.60 : 13,617,918.40 = 9,712,865.60 : x
  2. Step 2: Convert to fraction form
    9,712,865.60/13,617,918.40 = 9,712,865.60/x
  3. Step 3: Cross multiply
    9,712,865.60x = 13,617,918.40 × 9,712,865.60
  4. Step 4: Simplify right side
    9,712,865.60x = 132,269,011,170,967.03
  5. Step 5: Solve for x
    x = 132,269,011,170,967.03/9,712,865.60
  6. Step 6: Final answer
    x = 13,617,918.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.