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Finding the Fourth Proportional to 280,833.68, 387,549.60 and 153,509.36

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Solution

The fourth proportional to 280,833.68, 387,549.60 and 153,509.36 is: 211,842.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,833.68 : 387,549.60 = 153,509.36 : x
  2. Step 2: Convert to fraction form
    280,833.68/387,549.60 = 153,509.36/x
  3. Step 3: Cross multiply
    280,833.68x = 387,549.60 × 153,509.36
  4. Step 4: Simplify right side
    280,833.68x = 59,492,491,064.26
  5. Step 5: Solve for x
    x = 59,492,491,064.26/280,833.68
  6. Step 6: Final answer
    x = 211,842.44

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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.