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Finding the Fourth Proportional to 12,778,828,885.60, 19,168,243,328.40 and 12,778,828,885.60

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Solution

The fourth proportional to 12,778,828,885.60, 19,168,243,328.40 and 12,778,828,885.60 is: 19,168,243,328.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,778,828,885.60 : 19,168,243,328.40 = 12,778,828,885.60 : x
  2. Step 2: Convert to fraction form
    12,778,828,885.60/19,168,243,328.40 = 12,778,828,885.60/x
  3. Step 3: Cross multiply
    12,778,828,885.60x = 19,168,243,328.40 × 12,778,828,885.60
  4. Step 4: Simplify right side
    12,778,828,885.60x = 244,947,701,531,167,424,512
  5. Step 5: Solve for x
    x = 244,947,701,531,167,424,512/12,778,828,885.60
  6. Step 6: Final answer
    x = 19,168,243,328.40

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1.5x scale

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.