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Finding the Fourth Proportional to 1,158.64, 1,597.88 and 766.06

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Solution

The fourth proportional to 1,158.64, 1,597.88 and 766.06 is: 1,056.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,158.64 : 1,597.88 = 766.06 : x
  2. Step 2: Convert to fraction form
    1,158.64/1,597.88 = 766.06/x
  3. Step 3: Cross multiply
    1,158.64x = 1,597.88 × 766.06
  4. Step 4: Simplify right side
    1,158.64x = 1,224,071.95
  5. Step 5: Solve for x
    x = 1,224,071.95/1,158.64
  6. Step 6: Final answer
    x = 1,056.47

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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.