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Finding the Fourth Proportional to 70,078,667.40, 105,118,001.10 and 70,078,667.40

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Solution

The fourth proportional to 70,078,667.40, 105,118,001.10 and 70,078,667.40 is: 105,118,001.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,078,667.40 : 105,118,001.10 = 70,078,667.40 : x
  2. Step 2: Convert to fraction form
    70,078,667.40/105,118,001.10 = 70,078,667.40/x
  3. Step 3: Cross multiply
    70,078,667.40x = 105,118,001.10 × 70,078,667.40
  4. Step 4: Simplify right side
    70,078,667.40x = 7,366,529,436,839,734
  5. Step 5: Solve for x
    x = 7,366,529,436,839,734/70,078,667.40
  6. Step 6: Final answer
    x = 105,118,001.10

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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.