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Finding the Fourth Proportional to 280,892.81, 387,633.50 and 153,568.41

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Solution

The fourth proportional to 280,892.81, 387,633.50 and 153,568.41 is: 211,925.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,892.81 : 387,633.50 = 153,568.41 : x
  2. Step 2: Convert to fraction form
    280,892.81/387,633.50 = 153,568.41/x
  3. Step 3: Cross multiply
    280,892.81x = 387,633.50 × 153,568.41
  4. Step 4: Simplify right side
    280,892.81x = 59,528,258,612.15
  5. Step 5: Solve for x
    x = 59,528,258,612.15/280,892.81
  6. Step 6: Final answer
    x = 211,925.18

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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.