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Finding the Fourth Proportional to 404,547.90, 605,655.45 and 247,083.90

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Solution

The fourth proportional to 404,547.90, 605,655.45 and 247,083.90 is: 369,913.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,547.90 : 605,655.45 = 247,083.90 : x
  2. Step 2: Convert to fraction form
    404,547.90/605,655.45 = 247,083.90/x
  3. Step 3: Cross multiply
    404,547.90x = 605,655.45 × 247,083.90
  4. Step 4: Simplify right side
    404,547.90x = 149,647,710,642.26
  5. Step 5: Solve for x
    x = 149,647,710,642.26/404,547.90
  6. Step 6: Final answer
    x = 369,913.45

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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.