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Finding the Fourth Proportional to 616,728.80, 926,043.60 and 336,792.80

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Solution

The fourth proportional to 616,728.80, 926,043.60 and 336,792.80 is: 505,708.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,728.80 : 926,043.60 = 336,792.80 : x
  2. Step 2: Convert to fraction form
    616,728.80/926,043.60 = 336,792.80/x
  3. Step 3: Cross multiply
    616,728.80x = 926,043.60 × 336,792.80
  4. Step 4: Simplify right side
    616,728.80x = 311,884,816,966.08
  5. Step 5: Solve for x
    x = 311,884,816,966.08/616,728.80
  6. Step 6: Final answer
    x = 505,708.21

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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.