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Finding the Fourth Proportional to 9,789,878.10, 14,684,817.15 and 9,789,878.10

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Solution

The fourth proportional to 9,789,878.10, 14,684,817.15 and 9,789,878.10 is: 14,684,817.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,789,878.10 : 14,684,817.15 = 9,789,878.10 : x
  2. Step 2: Convert to fraction form
    9,789,878.10/14,684,817.15 = 9,789,878.10/x
  3. Step 3: Cross multiply
    9,789,878.10x = 14,684,817.15 × 9,789,878.10
  4. Step 4: Simplify right side
    9,789,878.10x = 143,762,569,819,289.41
  5. Step 5: Solve for x
    x = 143,762,569,819,289.41/9,789,878.10
  6. Step 6: Final answer
    x = 14,684,817.15

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Double scale
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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.