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Finding the Fourth Proportional to 438,661.40, 657,992.10 and 333,685.40

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Solution

The fourth proportional to 438,661.40, 657,992.10 and 333,685.40 is: 500,528.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,661.40 : 657,992.10 = 333,685.40 : x
  2. Step 2: Convert to fraction form
    438,661.40/657,992.10 = 333,685.40/x
  3. Step 3: Cross multiply
    438,661.40x = 657,992.10 × 333,685.40
  4. Step 4: Simplify right side
    438,661.40x = 219,562,357,085.34
  5. Step 5: Solve for x
    x = 219,562,357,085.34/438,661.40
  6. Step 6: Final answer
    x = 500,528.10

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Similar ratio
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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.