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Finding the Fourth Proportional to 716,961.95, 989,419.95 and 411,088.13

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Solution

The fourth proportional to 716,961.95, 989,419.95 and 411,088.13 is: 567,308.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,961.95 : 989,419.95 = 411,088.13 : x
  2. Step 2: Convert to fraction form
    716,961.95/989,419.95 = 411,088.13/x
  3. Step 3: Cross multiply
    716,961.95x = 989,419.95 × 411,088.13
  4. Step 4: Simplify right side
    716,961.95x = 406,738,792,083.09
  5. Step 5: Solve for x
    x = 406,738,792,083.09/716,961.95
  6. Step 6: Final answer
    x = 567,308.76

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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.