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Finding the Fourth Proportional to 719,441.64, 991,907.10 and 589,903.20

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Solution

The fourth proportional to 719,441.64, 991,907.10 and 589,903.20 is: 813,310.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,441.64 : 991,907.10 = 589,903.20 : x
  2. Step 2: Convert to fraction form
    719,441.64/991,907.10 = 589,903.20/x
  3. Step 3: Cross multiply
    719,441.64x = 991,907.10 × 589,903.20
  4. Step 4: Simplify right side
    719,441.64x = 585,129,172,392.72
  5. Step 5: Solve for x
    x = 585,129,172,392.72/719,441.64
  6. Step 6: Final answer
    x = 813,310.13

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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.