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Finding the Fourth Proportional to 933,921.12, 1,398,869.60 and 632,749.28

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Solution

The fourth proportional to 933,921.12, 1,398,869.60 and 632,749.28 is: 947,760.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    933,921.12 : 1,398,869.60 = 632,749.28 : x
  2. Step 2: Convert to fraction form
    933,921.12/1,398,869.60 = 632,749.28/x
  3. Step 3: Cross multiply
    933,921.12x = 1,398,869.60 × 632,749.28
  4. Step 4: Simplify right side
    933,921.12x = 885,133,732,213.89
  5. Step 5: Solve for x
    x = 885,133,732,213.89/933,921.12
  6. Step 6: Final answer
    x = 947,760.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.