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Finding the Fourth Proportional to 447,047.20, 616,878.48 and 256,068.64

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Solution

The fourth proportional to 447,047.20, 616,878.48 and 256,068.64 is: 353,348.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,047.20 : 616,878.48 = 256,068.64 : x
  2. Step 2: Convert to fraction form
    447,047.20/616,878.48 = 256,068.64/x
  3. Step 3: Cross multiply
    447,047.20x = 616,878.48 × 256,068.64
  4. Step 4: Simplify right side
    447,047.20x = 157,963,233,418.87
  5. Step 5: Solve for x
    x = 157,963,233,418.87/447,047.20
  6. Step 6: Final answer
    x = 353,348.00

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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.