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Finding the Fourth Proportional to 572,068.64, 857,981.46 and 216,958.16

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Solution

The fourth proportional to 572,068.64, 857,981.46 and 216,958.16 is: 325,391.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,068.64 : 857,981.46 = 216,958.16 : x
  2. Step 2: Convert to fraction form
    572,068.64/857,981.46 = 216,958.16/x
  3. Step 3: Cross multiply
    572,068.64x = 857,981.46 × 216,958.16
  4. Step 4: Simplify right side
    572,068.64x = 186,146,078,875.71
  5. Step 5: Solve for x
    x = 186,146,078,875.71/572,068.64
  6. Step 6: Final answer
    x = 325,391.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.