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Finding the Fourth Proportional to 719,550, 993,095.64 and 417,918.96

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Solution

The fourth proportional to 719,550, 993,095.64 and 417,918.96 is: 576,795.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,550 : 993,095.64 = 417,918.96 : x
  2. Step 2: Convert to fraction form
    719,550/993,095.64 = 417,918.96/x
  3. Step 3: Cross multiply
    719,550x = 993,095.64 × 417,918.96
  4. Step 4: Simplify right side
    719,550x = 415,033,497,049.33
  5. Step 5: Solve for x
    x = 415,033,497,049.33/719,550
  6. Step 6: Final answer
    x = 576,795.91

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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.