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Finding the Fourth Proportional to 676,809.20, 933,996.85 and 404,888.42

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Solution

The fourth proportional to 676,809.20, 933,996.85 and 404,888.42 is: 558,746.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,809.20 : 933,996.85 = 404,888.42 : x
  2. Step 2: Convert to fraction form
    676,809.20/933,996.85 = 404,888.42/x
  3. Step 3: Cross multiply
    676,809.20x = 933,996.85 × 404,888.42
  4. Step 4: Simplify right side
    676,809.20x = 378,164,508,881.48
  5. Step 5: Solve for x
    x = 378,164,508,881.48/676,809.20
  6. Step 6: Final answer
    x = 558,746.11

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1.5x scale

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.