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Finding the Fourth Proportional to 698,005.72, 963,297.66 and 396,219.16

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Solution

The fourth proportional to 698,005.72, 963,297.66 and 396,219.16 is: 546,810.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,005.72 : 963,297.66 = 396,219.16 : x
  2. Step 2: Convert to fraction form
    698,005.72/963,297.66 = 396,219.16/x
  3. Step 3: Cross multiply
    698,005.72x = 963,297.66 × 396,219.16
  4. Step 4: Simplify right side
    698,005.72x = 381,676,989,675.17
  5. Step 5: Solve for x
    x = 381,676,989,675.17/698,005.72
  6. Step 6: Final answer
    x = 546,810.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.