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Finding the Fourth Proportional to 719,841.75, 993,381.62 and 418,055.19

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Solution

The fourth proportional to 719,841.75, 993,381.62 and 418,055.19 is: 576,916.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,841.75 : 993,381.62 = 418,055.19 : x
  2. Step 2: Convert to fraction form
    719,841.75/993,381.62 = 418,055.19/x
  3. Step 3: Cross multiply
    719,841.75x = 993,381.62 × 418,055.19
  4. Step 4: Simplify right side
    719,841.75x = 415,288,339,801.33
  5. Step 5: Solve for x
    x = 415,288,339,801.33/719,841.75
  6. Step 6: Final answer
    x = 576,916.16

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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.