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Finding the Fourth Proportional to 562,906.56, 776,828.64 and 308,281.92

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Solution

The fourth proportional to 562,906.56, 776,828.64 and 308,281.92 is: 425,438.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,906.56 : 776,828.64 = 308,281.92 : x
  2. Step 2: Convert to fraction form
    562,906.56/776,828.64 = 308,281.92/x
  3. Step 3: Cross multiply
    562,906.56x = 776,828.64 × 308,281.92
  4. Step 4: Simplify right side
    562,906.56x = 239,482,224,650.19
  5. Step 5: Solve for x
    x = 239,482,224,650.19/562,906.56
  6. Step 6: Final answer
    x = 425,438.68

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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.