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Finding the Fourth Proportional to 690,957, 953,759.30 and 404,569.16

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Solution

The fourth proportional to 690,957, 953,759.30 and 404,569.16 is: 558,445.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,957 : 953,759.30 = 404,569.16 : x
  2. Step 2: Convert to fraction form
    690,957/953,759.30 = 404,569.16/x
  3. Step 3: Cross multiply
    690,957x = 953,759.30 × 404,569.16
  4. Step 4: Simplify right side
    690,957x = 385,861,598,843.19
  5. Step 5: Solve for x
    x = 385,861,598,843.19/690,957
  6. Step 6: Final answer
    x = 558,445.17

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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.