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Finding the Fourth Proportional to 690,563.68, 953,025.72 and 418,643.03

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Solution

The fourth proportional to 690,563.68, 953,025.72 and 418,643.03 is: 577,756.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,563.68 : 953,025.72 = 418,643.03 : x
  2. Step 2: Convert to fraction form
    690,563.68/953,025.72 = 418,643.03/x
  3. Step 3: Cross multiply
    690,563.68x = 953,025.72 × 418,643.03
  4. Step 4: Simplify right side
    690,563.68x = 398,977,575,901.39
  5. Step 5: Solve for x
    x = 398,977,575,901.39/690,563.68
  6. Step 6: Final answer
    x = 577,756.39

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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.