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Finding the Fourth Proportional to 535,490.40, 801,680.40 and 519,938.40

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Solution

The fourth proportional to 535,490.40, 801,680.40 and 519,938.40 is: 778,397.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,490.40 : 801,680.40 = 519,938.40 : x
  2. Step 2: Convert to fraction form
    535,490.40/801,680.40 = 519,938.40/x
  3. Step 3: Cross multiply
    535,490.40x = 801,680.40 × 519,938.40
  4. Step 4: Simplify right side
    535,490.40x = 416,824,424,487.36
  5. Step 5: Solve for x
    x = 416,824,424,487.36/535,490.40
  6. Step 6: Final answer
    x = 778,397.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.