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Finding the Fourth Proportional to 3,547.97, 5,322.14 and 915.50

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Solution

The fourth proportional to 3,547.97, 5,322.14 and 915.50 is: 1,373.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,547.97 : 5,322.14 = 915.50 : x
  2. Step 2: Convert to fraction form
    3,547.97/5,322.14 = 915.50/x
  3. Step 3: Cross multiply
    3,547.97x = 5,322.14 × 915.50
  4. Step 4: Simplify right side
    3,547.97x = 4,872,387.98
  5. Step 5: Solve for x
    x = 4,872,387.98/3,547.97
  6. Step 6: Final answer
    x = 1,373.29

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1.5x scale

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.