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Finding the Fourth Proportional to 934,215, 1,289,426.70 and 611,737.80

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Solution

The fourth proportional to 934,215, 1,289,426.70 and 611,737.80 is: 844,335.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    934,215 : 1,289,426.70 = 611,737.80 : x
  2. Step 2: Convert to fraction form
    934,215/1,289,426.70 = 611,737.80/x
  3. Step 3: Cross multiply
    934,215x = 1,289,426.70 × 611,737.80
  4. Step 4: Simplify right side
    934,215x = 788,791,052,719.26
  5. Step 5: Solve for x
    x = 788,791,052,719.26/934,215
  6. Step 6: Final answer
    x = 844,335.68

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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.