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Finding the Fourth Proportional to 12,948,079.80, 18,153,853.80 and 12,948,079.80

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Solution

The fourth proportional to 12,948,079.80, 18,153,853.80 and 12,948,079.80 is: 18,153,853.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,948,079.80 : 18,153,853.80 = 12,948,079.80 : x
  2. Step 2: Convert to fraction form
    12,948,079.80/18,153,853.80 = 12,948,079.80/x
  3. Step 3: Cross multiply
    12,948,079.80x = 18,153,853.80 × 12,948,079.80
  4. Step 4: Simplify right side
    12,948,079.80x = 235,057,547,679,933.25
  5. Step 5: Solve for x
    x = 235,057,547,679,933.25/12,948,079.80
  6. Step 6: Final answer
    x = 18,153,853.80

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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.