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Finding the Fourth Proportional to 623,858.70, 931,275.20 and 548,190.90

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Solution

The fourth proportional to 623,858.70, 931,275.20 and 548,190.90 is: 818,320.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,858.70 : 931,275.20 = 548,190.90 : x
  2. Step 2: Convert to fraction form
    623,858.70/931,275.20 = 548,190.90/x
  3. Step 3: Cross multiply
    623,858.70x = 931,275.20 × 548,190.90
  4. Step 4: Simplify right side
    623,858.70x = 510,516,587,294.73
  5. Step 5: Solve for x
    x = 510,516,587,294.73/623,858.70
  6. Step 6: Final answer
    x = 818,320.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.