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Finding the Fourth Proportional to 713,407.79, 1,071,179.08 and 617,641.17

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Solution

The fourth proportional to 713,407.79, 1,071,179.08 and 617,641.17 is: 927,385.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,407.79 : 1,071,179.08 = 617,641.17 : x
  2. Step 2: Convert to fraction form
    713,407.79/1,071,179.08 = 617,641.17/x
  3. Step 3: Cross multiply
    713,407.79x = 1,071,179.08 × 617,641.17
  4. Step 4: Simplify right side
    713,407.79x = 661,604,307,202.00
  5. Step 5: Solve for x
    x = 661,604,307,202.00/713,407.79
  6. Step 6: Final answer
    x = 927,385.88

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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.