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Finding the Fourth Proportional to 73,547.60, 110,320.79 and 20,957.23

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Solution

The fourth proportional to 73,547.60, 110,320.79 and 20,957.23 is: 31,435.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,547.60 : 110,320.79 = 20,957.23 : x
  2. Step 2: Convert to fraction form
    73,547.60/110,320.79 = 20,957.23/x
  3. Step 3: Cross multiply
    73,547.60x = 110,320.79 × 20,957.23
  4. Step 4: Simplify right side
    73,547.60x = 2,312,018,202.93
  5. Step 5: Solve for x
    x = 2,312,018,202.93/73,547.60
  6. Step 6: Final answer
    x = 31,435.67

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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.