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Finding the Fourth Proportional to 1,293,903.60, 1,941,438.60 and 619,724.40

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Solution

The fourth proportional to 1,293,903.60, 1,941,438.60 and 619,724.40 is: 929,865.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293,903.60 : 1,941,438.60 = 619,724.40 : x
  2. Step 2: Convert to fraction form
    1,293,903.60/1,941,438.60 = 619,724.40/x
  3. Step 3: Cross multiply
    1,293,903.60x = 1,941,438.60 × 619,724.40
  4. Step 4: Simplify right side
    1,293,903.60x = 1,203,156,871,521.84
  5. Step 5: Solve for x
    x = 1,203,156,871,521.84/1,293,903.60
  6. Step 6: Final answer
    x = 929,865.93

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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.