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Finding the Fourth Proportional to 663,916.90, 995,875.35 and 165,280.90

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Solution

The fourth proportional to 663,916.90, 995,875.35 and 165,280.90 is: 247,921.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,916.90 : 995,875.35 = 165,280.90 : x
  2. Step 2: Convert to fraction form
    663,916.90/995,875.35 = 165,280.90/x
  3. Step 3: Cross multiply
    663,916.90x = 995,875.35 × 165,280.90
  4. Step 4: Simplify right side
    663,916.90x = 164,599,174,135.82
  5. Step 5: Solve for x
    x = 164,599,174,135.82/663,916.90
  6. Step 6: Final answer
    x = 247,921.35

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Half scale
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Double scale
Find fourth proportional to 663,917.90, 995,876.85 and 165,281.90
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.