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Finding the Fourth Proportional to 554,613.60, 831,920.40 and 519,621.60

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Solution

The fourth proportional to 554,613.60, 831,920.40 and 519,621.60 is: 779,432.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,613.60 : 831,920.40 = 519,621.60 : x
  2. Step 2: Convert to fraction form
    554,613.60/831,920.40 = 519,621.60/x
  3. Step 3: Cross multiply
    554,613.60x = 831,920.40 × 519,621.60
  4. Step 4: Simplify right side
    554,613.60x = 432,283,809,320.64
  5. Step 5: Solve for x
    x = 432,283,809,320.64/554,613.60
  6. Step 6: Final answer
    x = 779,432.40

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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.