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Finding the Fourth Proportional to 623,157.40, 858,949.80 and 486,954.68

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Solution

The fourth proportional to 623,157.40, 858,949.80 and 486,954.68 is: 671,210.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,157.40 : 858,949.80 = 486,954.68 : x
  2. Step 2: Convert to fraction form
    623,157.40/858,949.80 = 486,954.68/x
  3. Step 3: Cross multiply
    623,157.40x = 858,949.80 × 486,954.68
  4. Step 4: Simplify right side
    623,157.40x = 418,269,624,995.06
  5. Step 5: Solve for x
    x = 418,269,624,995.06/623,157.40
  6. Step 6: Final answer
    x = 671,210.24

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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.