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Finding the Fourth Proportional to 615,698.11, 849,805.10 and 361,131.31

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Solution

The fourth proportional to 615,698.11, 849,805.10 and 361,131.31 is: 498,444.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,698.11 : 849,805.10 = 361,131.31 : x
  2. Step 2: Convert to fraction form
    615,698.11/849,805.10 = 361,131.31/x
  3. Step 3: Cross multiply
    615,698.11x = 849,805.10 × 361,131.31
  4. Step 4: Simplify right side
    615,698.11x = 306,891,225,661.48
  5. Step 5: Solve for x
    x = 306,891,225,661.48/615,698.11
  6. Step 6: Final answer
    x = 498,444.32

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Double scale
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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.