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Finding the Fourth Proportional to 462,685.20, 695,064.60 and 443,792.40

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Solution

The fourth proportional to 462,685.20, 695,064.60 and 443,792.40 is: 666,683.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,685.20 : 695,064.60 = 443,792.40 : x
  2. Step 2: Convert to fraction form
    462,685.20/695,064.60 = 443,792.40/x
  3. Step 3: Cross multiply
    462,685.20x = 695,064.60 × 443,792.40
  4. Step 4: Simplify right side
    462,685.20x = 308,464,386,989.04
  5. Step 5: Solve for x
    x = 308,464,386,989.04/462,685.20
  6. Step 6: Final answer
    x = 666,683.06

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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.