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Finding the Fourth Proportional to 177,312.30, 265,968.45 and 142,320.30

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Solution

The fourth proportional to 177,312.30, 265,968.45 and 142,320.30 is: 213,480.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,312.30 : 265,968.45 = 142,320.30 : x
  2. Step 2: Convert to fraction form
    177,312.30/265,968.45 = 142,320.30/x
  3. Step 3: Cross multiply
    177,312.30x = 265,968.45 × 142,320.30
  4. Step 4: Simplify right side
    177,312.30x = 37,852,709,594.54
  5. Step 5: Solve for x
    x = 37,852,709,594.54/177,312.30
  6. Step 6: Final answer
    x = 213,480.45

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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.