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Finding the Fourth Proportional to 660,776.16, 991,124.10 and 234,333.12

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Solution

The fourth proportional to 660,776.16, 991,124.10 and 234,333.12 is: 351,485.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,776.16 : 991,124.10 = 234,333.12 : x
  2. Step 2: Convert to fraction form
    660,776.16/991,124.10 = 234,333.12/x
  3. Step 3: Cross multiply
    660,776.16x = 991,124.10 × 234,333.12
  4. Step 4: Simplify right side
    660,776.16x = 232,253,202,660.19
  5. Step 5: Solve for x
    x = 232,253,202,660.19/660,776.16
  6. Step 6: Final answer
    x = 351,485.45

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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.