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Finding the Fourth Proportional to 70,435,428.80, 98,408,046.40 and 70,435,428.80

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Solution

The fourth proportional to 70,435,428.80, 98,408,046.40 and 70,435,428.80 is: 98,408,046.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,435,428.80 : 98,408,046.40 = 70,435,428.80 : x
  2. Step 2: Convert to fraction form
    70,435,428.80/98,408,046.40 = 70,435,428.80/x
  3. Step 3: Cross multiply
    70,435,428.80x = 98,408,046.40 × 70,435,428.80
  4. Step 4: Simplify right side
    70,435,428.80x = 6,931,412,945,554,296
  5. Step 5: Solve for x
    x = 6,931,412,945,554,296/70,435,428.80
  6. Step 6: Final answer
    x = 98,408,046.40

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1.5x scale

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.