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Finding the Fourth Proportional to 572,901.78, 790,275.48 and 357,668.16

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Solution

The fourth proportional to 572,901.78, 790,275.48 and 357,668.16 is: 493,376.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,901.78 : 790,275.48 = 357,668.16 : x
  2. Step 2: Convert to fraction form
    572,901.78/790,275.48 = 357,668.16/x
  3. Step 3: Cross multiply
    572,901.78x = 790,275.48 × 357,668.16
  4. Step 4: Simplify right side
    572,901.78x = 282,656,376,824.72
  5. Step 5: Solve for x
    x = 282,656,376,824.72/572,901.78
  6. Step 6: Final answer
    x = 493,376.68

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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.