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Finding the Fourth Proportional to 517,907.80, 776,861.70 and 163,030.60

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Solution

The fourth proportional to 517,907.80, 776,861.70 and 163,030.60 is: 244,545.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,907.80 : 776,861.70 = 163,030.60 : x
  2. Step 2: Convert to fraction form
    517,907.80/776,861.70 = 163,030.60/x
  3. Step 3: Cross multiply
    517,907.80x = 776,861.70 × 163,030.60
  4. Step 4: Simplify right side
    517,907.80x = 126,652,229,068.02
  5. Step 5: Solve for x
    x = 126,652,229,068.02/517,907.80
  6. Step 6: Final answer
    x = 244,545.90

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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.