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Finding the Fourth Proportional to 624,986.71, 862,477.63 and 353,142.61

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Solution

The fourth proportional to 624,986.71, 862,477.63 and 353,142.61 is: 487,334.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,986.71 : 862,477.63 = 353,142.61 : x
  2. Step 2: Convert to fraction form
    624,986.71/862,477.63 = 353,142.61/x
  3. Step 3: Cross multiply
    624,986.71x = 862,477.63 × 353,142.61
  4. Step 4: Simplify right side
    624,986.71x = 304,577,598,285.76
  5. Step 5: Solve for x
    x = 304,577,598,285.76/624,986.71
  6. Step 6: Final answer
    x = 487,334.52

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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.