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Finding the Fourth Proportional to 664,457.10, 996,685.65 and 243,678.30

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Solution

The fourth proportional to 664,457.10, 996,685.65 and 243,678.30 is: 365,517.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,457.10 : 996,685.65 = 243,678.30 : x
  2. Step 2: Convert to fraction form
    664,457.10/996,685.65 = 243,678.30/x
  3. Step 3: Cross multiply
    664,457.10x = 996,685.65 × 243,678.30
  4. Step 4: Simplify right side
    664,457.10x = 242,870,664,826.40
  5. Step 5: Solve for x
    x = 242,870,664,826.40/664,457.10
  6. Step 6: Final answer
    x = 365,517.45

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Half scale
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Double scale
Find fourth proportional to 664,458.10, 996,687.15 and 243,679.30
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.