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Finding the Fourth Proportional to 282,393.72, 389,710.14 and 153,337.68

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Solution

The fourth proportional to 282,393.72, 389,710.14 and 153,337.68 is: 211,609.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,393.72 : 389,710.14 = 153,337.68 : x
  2. Step 2: Convert to fraction form
    282,393.72/389,710.14 = 153,337.68/x
  3. Step 3: Cross multiply
    282,393.72x = 389,710.14 × 153,337.68
  4. Step 4: Simplify right side
    282,393.72x = 59,757,248,740.08
  5. Step 5: Solve for x
    x = 59,757,248,740.08/282,393.72
  6. Step 6: Final answer
    x = 211,609.69

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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.