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Finding the Fourth Proportional to 643,241.76, 886,648.32 and 507,053.76

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Solution

The fourth proportional to 643,241.76, 886,648.32 and 507,053.76 is: 698,925.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,241.76 : 886,648.32 = 507,053.76 : x
  2. Step 2: Convert to fraction form
    643,241.76/886,648.32 = 507,053.76/x
  3. Step 3: Cross multiply
    643,241.76x = 886,648.32 × 507,053.76
  4. Step 4: Simplify right side
    643,241.76x = 449,578,364,453.68
  5. Step 5: Solve for x
    x = 449,578,364,453.68/643,241.76
  6. Step 6: Final answer
    x = 698,925.96

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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.