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Finding the Fourth Proportional to 1,395.95, 2,094.42 and 530.25

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Solution

The fourth proportional to 1,395.95, 2,094.42 and 530.25 is: 795.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,395.95 : 2,094.42 = 530.25 : x
  2. Step 2: Convert to fraction form
    1,395.95/2,094.42 = 530.25/x
  3. Step 3: Cross multiply
    1,395.95x = 2,094.42 × 530.25
  4. Step 4: Simplify right side
    1,395.95x = 1,110,566.21
  5. Step 5: Solve for x
    x = 1,110,566.21/1,395.95
  6. Step 6: Final answer
    x = 795.57

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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.