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Finding the Fourth Proportional to 312,007.10, 468,010.65 and 112,358.30

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Solution

The fourth proportional to 312,007.10, 468,010.65 and 112,358.30 is: 168,537.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,007.10 : 468,010.65 = 112,358.30 : x
  2. Step 2: Convert to fraction form
    312,007.10/468,010.65 = 112,358.30/x
  3. Step 3: Cross multiply
    312,007.10x = 468,010.65 × 112,358.30
  4. Step 4: Simplify right side
    312,007.10x = 52,584,881,015.90
  5. Step 5: Solve for x
    x = 52,584,881,015.90/312,007.10
  6. Step 6: Final answer
    x = 168,537.45

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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.