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Finding the Fourth Proportional to 419,365.25, 578,778.72 and 249,599.38

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Solution

The fourth proportional to 419,365.25, 578,778.72 and 249,599.38 is: 344,479.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,365.25 : 578,778.72 = 249,599.38 : x
  2. Step 2: Convert to fraction form
    419,365.25/578,778.72 = 249,599.38/x
  3. Step 3: Cross multiply
    419,365.25x = 578,778.72 × 249,599.38
  4. Step 4: Simplify right side
    419,365.25x = 144,462,809,669.19
  5. Step 5: Solve for x
    x = 144,462,809,669.19/419,365.25
  6. Step 6: Final answer
    x = 344,479.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.