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Finding the Fourth Proportional to 312,254.19, 430,911.90 and 169,014.06

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Solution

The fourth proportional to 312,254.19, 430,911.90 and 169,014.06 is: 233,240.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,254.19 : 430,911.90 = 169,014.06 : x
  2. Step 2: Convert to fraction form
    312,254.19/430,911.90 = 169,014.06/x
  3. Step 3: Cross multiply
    312,254.19x = 430,911.90 × 169,014.06
  4. Step 4: Simplify right side
    312,254.19x = 72,830,169,721.31
  5. Step 5: Solve for x
    x = 72,830,169,721.31/312,254.19
  6. Step 6: Final answer
    x = 233,240.01

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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.