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Finding the Fourth Proportional to 583,938.80, 875,908.20 and 209,999.60

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Solution

The fourth proportional to 583,938.80, 875,908.20 and 209,999.60 is: 314,999.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,938.80 : 875,908.20 = 209,999.60 : x
  2. Step 2: Convert to fraction form
    583,938.80/875,908.20 = 209,999.60/x
  3. Step 3: Cross multiply
    583,938.80x = 875,908.20 × 209,999.60
  4. Step 4: Simplify right side
    583,938.80x = 183,940,371,636.72
  5. Step 5: Solve for x
    x = 183,940,371,636.72/583,938.80
  6. Step 6: Final answer
    x = 314,999.40

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Double scale
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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.