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Finding the Fourth Proportional to 13,328,045.78, 19,992,068.66 and 13,328,045.78

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Solution

The fourth proportional to 13,328,045.78, 19,992,068.66 and 13,328,045.78 is: 19,992,068.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,328,045.78 : 19,992,068.66 = 13,328,045.78 : x
  2. Step 2: Convert to fraction form
    13,328,045.78/19,992,068.66 = 13,328,045.78/x
  3. Step 3: Cross multiply
    13,328,045.78x = 19,992,068.66 × 13,328,045.78
  4. Step 4: Simplify right side
    13,328,045.78x = 266,455,206,270,743.06
  5. Step 5: Solve for x
    x = 266,455,206,270,743.06/13,328,045.78
  6. Step 6: Final answer
    x = 19,992,068.66

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Similar ratio
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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.