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Finding the Fourth Proportional to 662,186.70, 913,708.64 and 417,133.36

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Solution

The fourth proportional to 662,186.70, 913,708.64 and 417,133.36 is: 575,575.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,186.70 : 913,708.64 = 417,133.36 : x
  2. Step 2: Convert to fraction form
    662,186.70/913,708.64 = 417,133.36/x
  3. Step 3: Cross multiply
    662,186.70x = 913,708.64 × 417,133.36
  4. Step 4: Simplify right side
    662,186.70x = 381,138,355,064.23
  5. Step 5: Solve for x
    x = 381,138,355,064.23/662,186.70
  6. Step 6: Final answer
    x = 575,575.37

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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.