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Finding the Fourth Proportional to 317,790.72, 476,886.96 and 177,641.28

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Solution

The fourth proportional to 317,790.72, 476,886.96 and 177,641.28 is: 266,574.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,790.72 : 476,886.96 = 177,641.28 : x
  2. Step 2: Convert to fraction form
    317,790.72/476,886.96 = 177,641.28/x
  3. Step 3: Cross multiply
    317,790.72x = 476,886.96 × 177,641.28
  4. Step 4: Simplify right side
    317,790.72x = 84,714,809,989.71
  5. Step 5: Solve for x
    x = 84,714,809,989.71/317,790.72
  6. Step 6: Final answer
    x = 266,574.21

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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.