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Finding the Fourth Proportional to 9,555,439.60, 13,415,406.80 and 9,555,439.60

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Solution

The fourth proportional to 9,555,439.60, 13,415,406.80 and 9,555,439.60 is: 13,415,406.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,555,439.60 : 13,415,406.80 = 9,555,439.60 : x
  2. Step 2: Convert to fraction form
    9,555,439.60/13,415,406.80 = 9,555,439.60/x
  3. Step 3: Cross multiply
    9,555,439.60x = 13,415,406.80 × 9,555,439.60
  4. Step 4: Simplify right side
    9,555,439.60x = 128,190,109,386,829.28
  5. Step 5: Solve for x
    x = 128,190,109,386,829.28/9,555,439.60
  6. Step 6: Final answer
    x = 13,415,406.80

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Double scale
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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.