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Finding the Fourth Proportional to 665,746.73, 918,901.37 and 410,951.51

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Solution

The fourth proportional to 665,746.73, 918,901.37 and 410,951.51 is: 567,218.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,746.73 : 918,901.37 = 410,951.51 : x
  2. Step 2: Convert to fraction form
    665,746.73/918,901.37 = 410,951.51/x
  3. Step 3: Cross multiply
    665,746.73x = 918,901.37 × 410,951.51
  4. Step 4: Simplify right side
    665,746.73x = 377,623,903,487.81
  5. Step 5: Solve for x
    x = 377,623,903,487.81/665,746.73
  6. Step 6: Final answer
    x = 567,218.56

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Double scale
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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.