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Finding the Fourth Proportional to 716,622.29, 989,346.66 and 475,230.75

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Solution

The fourth proportional to 716,622.29, 989,346.66 and 475,230.75 is: 656,088.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,622.29 : 989,346.66 = 475,230.75 : x
  2. Step 2: Convert to fraction form
    716,622.29/989,346.66 = 475,230.75/x
  3. Step 3: Cross multiply
    716,622.29x = 989,346.66 × 475,230.75
  4. Step 4: Simplify right side
    716,622.29x = 470,167,947,918.91
  5. Step 5: Solve for x
    x = 470,167,947,918.91/716,622.29
  6. Step 6: Final answer
    x = 656,088.93

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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.