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Finding the Fourth Proportional to 719,607, 993,145.20 and 417,801

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Solution

The fourth proportional to 719,607, 993,145.20 and 417,801 is: 576,616.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,607 : 993,145.20 = 417,801 : x
  2. Step 2: Convert to fraction form
    719,607/993,145.20 = 417,801/x
  3. Step 3: Cross multiply
    719,607x = 993,145.20 × 417,801
  4. Step 4: Simplify right side
    719,607x = 414,937,057,705.20
  5. Step 5: Solve for x
    x = 414,937,057,705.20/719,607
  6. Step 6: Final answer
    x = 576,616.21

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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.