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Finding the Fourth Proportional to 74,451.20, 103,998.40 and 74,451.20

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Solution

The fourth proportional to 74,451.20, 103,998.40 and 74,451.20 is: 103,998.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,451.20 : 103,998.40 = 74,451.20 : x
  2. Step 2: Convert to fraction form
    74,451.20/103,998.40 = 74,451.20/x
  3. Step 3: Cross multiply
    74,451.20x = 103,998.40 × 74,451.20
  4. Step 4: Simplify right side
    74,451.20x = 7,742,805,678.08
  5. Step 5: Solve for x
    x = 7,742,805,678.08/74,451.20
  6. Step 6: Final answer
    x = 103,998.40

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Half scale
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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.