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Finding the Fourth Proportional to 708,867.46, 978,312.99 and 433,386.96

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Solution

The fourth proportional to 708,867.46, 978,312.99 and 433,386.96 is: 598,120.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,867.46 : 978,312.99 = 433,386.96 : x
  2. Step 2: Convert to fraction form
    708,867.46/978,312.99 = 433,386.96/x
  3. Step 3: Cross multiply
    708,867.46x = 978,312.99 × 433,386.96
  4. Step 4: Simplify right side
    708,867.46x = 423,988,092,664.61
  5. Step 5: Solve for x
    x = 423,988,092,664.61/708,867.46
  6. Step 6: Final answer
    x = 598,120.41

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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.