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Finding the Fourth Proportional to 157,148.86, 216,864.78 and 85,528.87

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Solution

The fourth proportional to 157,148.86, 216,864.78 and 85,528.87 is: 118,029.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,148.86 : 216,864.78 = 85,528.87 : x
  2. Step 2: Convert to fraction form
    157,148.86/216,864.78 = 85,528.87/x
  3. Step 3: Cross multiply
    157,148.86x = 216,864.78 × 85,528.87
  4. Step 4: Simplify right side
    157,148.86x = 18,548,199,576.20
  5. Step 5: Solve for x
    x = 18,548,199,576.20/157,148.86
  6. Step 6: Final answer
    x = 118,029.49

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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.