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Finding the Fourth Proportional to 249,326.90, 343,770.96 and 172,912.22

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Solution

The fourth proportional to 249,326.90, 343,770.96 and 172,912.22 is: 238,410.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,326.90 : 343,770.96 = 172,912.22 : x
  2. Step 2: Convert to fraction form
    249,326.90/343,770.96 = 172,912.22/x
  3. Step 3: Cross multiply
    249,326.90x = 343,770.96 × 172,912.22
  4. Step 4: Simplify right side
    249,326.90x = 59,442,199,865.13
  5. Step 5: Solve for x
    x = 59,442,199,865.13/249,326.90
  6. Step 6: Final answer
    x = 238,410.70

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1.5x scale

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.