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Finding the Fourth Proportional to 250,547.81, 375,821.72 and 216,713.28

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Solution

The fourth proportional to 250,547.81, 375,821.72 and 216,713.28 is: 325,069.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,547.81 : 375,821.72 = 216,713.28 : x
  2. Step 2: Convert to fraction form
    250,547.81/375,821.72 = 216,713.28/x
  3. Step 3: Cross multiply
    250,547.81x = 375,821.72 × 216,713.28
  4. Step 4: Simplify right side
    250,547.81x = 81,445,557,636.44
  5. Step 5: Solve for x
    x = 81,445,557,636.44/250,547.81
  6. Step 6: Final answer
    x = 325,069.92

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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.