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Finding the Fourth Proportional to 157,011.43, 216,673.68 and 85,389.91

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Solution

The fourth proportional to 157,011.43, 216,673.68 and 85,389.91 is: 117,836.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,011.43 : 216,673.68 = 85,389.91 : x
  2. Step 2: Convert to fraction form
    157,011.43/216,673.68 = 85,389.91/x
  3. Step 3: Cross multiply
    157,011.43x = 216,673.68 × 85,389.91
  4. Step 4: Simplify right side
    157,011.43x = 18,501,746,034.57
  5. Step 5: Solve for x
    x = 18,501,746,034.57/157,011.43
  6. Step 6: Final answer
    x = 117,836.94

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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.