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Finding the Fourth Proportional to 583,409.80, 875,114.70 and 209,384.20

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Solution

The fourth proportional to 583,409.80, 875,114.70 and 209,384.20 is: 314,076.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,409.80 : 875,114.70 = 209,384.20 : x
  2. Step 2: Convert to fraction form
    583,409.80/875,114.70 = 209,384.20/x
  3. Step 3: Cross multiply
    583,409.80x = 875,114.70 × 209,384.20
  4. Step 4: Simplify right side
    583,409.80x = 183,235,191,367.74
  5. Step 5: Solve for x
    x = 183,235,191,367.74/583,409.80
  6. Step 6: Final answer
    x = 314,076.30

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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.