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Finding the Fourth Proportional to 691,057.60, 953,333.52 and 404,400.28

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Solution

The fourth proportional to 691,057.60, 953,333.52 and 404,400.28 is: 557,881.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,057.60 : 953,333.52 = 404,400.28 : x
  2. Step 2: Convert to fraction form
    691,057.60/953,333.52 = 404,400.28/x
  3. Step 3: Cross multiply
    691,057.60x = 953,333.52 × 404,400.28
  4. Step 4: Simplify right side
    691,057.60x = 385,528,342,421.39
  5. Step 5: Solve for x
    x = 385,528,342,421.39/691,057.60
  6. Step 6: Final answer
    x = 557,881.63

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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.