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Finding the Fourth Proportional to 666,411.60, 935,338.20 and 666,411.60

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Solution

The fourth proportional to 666,411.60, 935,338.20 and 666,411.60 is: 935,338.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,411.60 : 935,338.20 = 666,411.60 : x
  2. Step 2: Convert to fraction form
    666,411.60/935,338.20 = 666,411.60/x
  3. Step 3: Cross multiply
    666,411.60x = 935,338.20 × 666,411.60
  4. Step 4: Simplify right side
    666,411.60x = 623,320,226,403.12
  5. Step 5: Solve for x
    x = 623,320,226,403.12/666,411.60
  6. Step 6: Final answer
    x = 935,338.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.