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Finding the Fourth Proportional to 876,186.96, 1,209,137.16 and 473,778

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Solution

The fourth proportional to 876,186.96, 1,209,137.16 and 473,778 is: 653,813.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,186.96 : 1,209,137.16 = 473,778 : x
  2. Step 2: Convert to fraction form
    876,186.96/1,209,137.16 = 473,778/x
  3. Step 3: Cross multiply
    876,186.96x = 1,209,137.16 × 473,778
  4. Step 4: Simplify right side
    876,186.96x = 572,862,585,390.48
  5. Step 5: Solve for x
    x = 572,862,585,390.48/876,186.96
  6. Step 6: Final answer
    x = 653,813.18

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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.