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Finding the Fourth Proportional to 257,527.31, 355,381.13 and 142,804.13

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Solution

The fourth proportional to 257,527.31, 355,381.13 and 142,804.13 is: 197,066.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,527.31 : 355,381.13 = 142,804.13 : x
  2. Step 2: Convert to fraction form
    257,527.31/355,381.13 = 142,804.13/x
  3. Step 3: Cross multiply
    257,527.31x = 355,381.13 × 142,804.13
  4. Step 4: Simplify right side
    257,527.31x = 50,749,893,088.07
  5. Step 5: Solve for x
    x = 50,749,893,088.07/257,527.31
  6. Step 6: Final answer
    x = 197,066.06

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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.