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Finding the Fourth Proportional to 16,788,930.30, 25,183,395.45 and 13,429,698.30

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Solution

The fourth proportional to 16,788,930.30, 25,183,395.45 and 13,429,698.30 is: 20,144,547.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,788,930.30 : 25,183,395.45 = 13,429,698.30 : x
  2. Step 2: Convert to fraction form
    16,788,930.30/25,183,395.45 = 13,429,698.30/x
  3. Step 3: Cross multiply
    16,788,930.30x = 25,183,395.45 × 13,429,698.30
  4. Step 4: Simplify right side
    16,788,930.30x = 338,205,403,063,092.75
  5. Step 5: Solve for x
    x = 338,205,403,063,092.75/16,788,930.30
  6. Step 6: Final answer
    x = 20,144,547.45

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Double scale
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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.