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Finding the Fourth Proportional to 519,263.70, 778,895.55 and 203,730.90

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Solution

The fourth proportional to 519,263.70, 778,895.55 and 203,730.90 is: 305,596.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,263.70 : 778,895.55 = 203,730.90 : x
  2. Step 2: Convert to fraction form
    519,263.70/778,895.55 = 203,730.90/x
  3. Step 3: Cross multiply
    519,263.70x = 778,895.55 × 203,730.90
  4. Step 4: Simplify right side
    519,263.70x = 158,685,091,407.50
  5. Step 5: Solve for x
    x = 158,685,091,407.50/519,263.70
  6. Step 6: Final answer
    x = 305,596.35

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Half scale
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Double scale
Find fourth proportional to 519,264.70, 778,897.05 and 203,731.90
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.