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Finding the Fourth Proportional to 691,501.77, 954,268.88 and 401,172.05

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Solution

The fourth proportional to 691,501.77, 954,268.88 and 401,172.05 is: 553,615.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,501.77 : 954,268.88 = 401,172.05 : x
  2. Step 2: Convert to fraction form
    691,501.77/954,268.88 = 401,172.05/x
  3. Step 3: Cross multiply
    691,501.77x = 954,268.88 × 401,172.05
  4. Step 4: Simplify right side
    691,501.77x = 382,825,996,063.60
  5. Step 5: Solve for x
    x = 382,825,996,063.60/691,501.77
  6. Step 6: Final answer
    x = 553,615.35

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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.