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Finding the Fourth Proportional to 614,683.80, 922,025.70 and 520,205.40

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Solution

The fourth proportional to 614,683.80, 922,025.70 and 520,205.40 is: 780,308.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,683.80 : 922,025.70 = 520,205.40 : x
  2. Step 2: Convert to fraction form
    614,683.80/922,025.70 = 520,205.40/x
  3. Step 3: Cross multiply
    614,683.80x = 922,025.70 × 520,205.40
  4. Step 4: Simplify right side
    614,683.80x = 479,642,748,078.78
  5. Step 5: Solve for x
    x = 479,642,748,078.78/614,683.80
  6. Step 6: Final answer
    x = 780,308.10

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1.5x scale

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.