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Finding the Fourth Proportional to 690,958, 953,760.68 and 404,570.16

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Solution

The fourth proportional to 690,958, 953,760.68 and 404,570.16 is: 558,446.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,958 : 953,760.68 = 404,570.16 : x
  2. Step 2: Convert to fraction form
    690,958/953,760.68 = 404,570.16/x
  3. Step 3: Cross multiply
    690,958x = 953,760.68 × 404,570.16
  4. Step 4: Simplify right side
    690,958x = 385,863,110,909.31
  5. Step 5: Solve for x
    x = 385,863,110,909.31/690,958
  6. Step 6: Final answer
    x = 558,446.55

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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.