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Finding the Fourth Proportional to 280,606.68, 387,235.69 and 153,281.36

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Solution

The fourth proportional to 280,606.68, 387,235.69 and 153,281.36 is: 211,527.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,606.68 : 387,235.69 = 153,281.36 : x
  2. Step 2: Convert to fraction form
    280,606.68/387,235.69 = 153,281.36/x
  3. Step 3: Cross multiply
    280,606.68x = 387,235.69 × 153,281.36
  4. Step 4: Simplify right side
    280,606.68x = 59,356,013,788.62
  5. Step 5: Solve for x
    x = 59,356,013,788.62/280,606.68
  6. Step 6: Final answer
    x = 211,527.44

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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.