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Finding the Fourth Proportional to 712,965.84, 983,524.84 and 483,445.45

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Solution

The fourth proportional to 712,965.84, 983,524.84 and 483,445.45 is: 666,905.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,965.84 : 983,524.84 = 483,445.45 : x
  2. Step 2: Convert to fraction form
    712,965.84/983,524.84 = 483,445.45/x
  3. Step 3: Cross multiply
    712,965.84x = 983,524.84 × 483,445.45
  4. Step 4: Simplify right side
    712,965.84x = 475,480,608,859.98
  5. Step 5: Solve for x
    x = 475,480,608,859.98/712,965.84
  6. Step 6: Final answer
    x = 666,905.18

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Double scale
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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.