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Finding the Fourth Proportional to 954.68, 1,430.76 and 692.01

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Solution

The fourth proportional to 954.68, 1,430.76 and 692.01 is: 1,037.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    954.68 : 1,430.76 = 692.01 : x
  2. Step 2: Convert to fraction form
    954.68/1,430.76 = 692.01/x
  3. Step 3: Cross multiply
    954.68x = 1,430.76 × 692.01
  4. Step 4: Simplify right side
    954.68x = 990,100.23
  5. Step 5: Solve for x
    x = 990,100.23/954.68
  6. Step 6: Final answer
    x = 1,037.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.