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Finding the Fourth Proportional to 562,645.28, 776,459.04 and 308,020.16

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Solution

The fourth proportional to 562,645.28, 776,459.04 and 308,020.16 is: 425,072.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,645.28 : 776,459.04 = 308,020.16 : x
  2. Step 2: Convert to fraction form
    562,645.28/776,459.04 = 308,020.16/x
  3. Step 3: Cross multiply
    562,645.28x = 776,459.04 × 308,020.16
  4. Step 4: Simplify right side
    562,645.28x = 239,165,037,734.25
  5. Step 5: Solve for x
    x = 239,165,037,734.25/562,645.28
  6. Step 6: Final answer
    x = 425,072.50

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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.