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Finding the Fourth Proportional to 1,056.53, 1,458.51 and 703.04

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Solution

The fourth proportional to 1,056.53, 1,458.51 and 703.04 is: 970.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,056.53 : 1,458.51 = 703.04 : x
  2. Step 2: Convert to fraction form
    1,056.53/1,458.51 = 703.04/x
  3. Step 3: Cross multiply
    1,056.53x = 1,458.51 × 703.04
  4. Step 4: Simplify right side
    1,056.53x = 1,025,385.34
  5. Step 5: Solve for x
    x = 1,025,385.34/1,056.53
  6. Step 6: Final answer
    x = 970.53

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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.