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Finding the Fourth Proportional to 11,651,979.60, 16,291,513.80 and 11,651,979.60

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Solution

The fourth proportional to 11,651,979.60, 16,291,513.80 and 11,651,979.60 is: 16,291,513.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,651,979.60 : 16,291,513.80 = 11,651,979.60 : x
  2. Step 2: Convert to fraction form
    11,651,979.60/16,291,513.80 = 11,651,979.60/x
  3. Step 3: Cross multiply
    11,651,979.60x = 16,291,513.80 × 11,651,979.60
  4. Step 4: Simplify right side
    11,651,979.60x = 189,828,386,450,718.47
  5. Step 5: Solve for x
    x = 189,828,386,450,718.47/11,651,979.60
  6. Step 6: Final answer
    x = 16,291,513.80

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1.5x scale

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.