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Finding the Fourth Proportional to 341,907.40, 513,282.30 and 215,547.40

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Solution

The fourth proportional to 341,907.40, 513,282.30 and 215,547.40 is: 323,586.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,907.40 : 513,282.30 = 215,547.40 : x
  2. Step 2: Convert to fraction form
    341,907.40/513,282.30 = 215,547.40/x
  3. Step 3: Cross multiply
    341,907.40x = 513,282.30 × 215,547.40
  4. Step 4: Simplify right side
    341,907.40x = 110,636,665,231.02
  5. Step 5: Solve for x
    x = 110,636,665,231.02/341,907.40
  6. Step 6: Final answer
    x = 323,586.64

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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.