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Finding the Fourth Proportional to 557,005.68, 768,668.76 and 302,357.16

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Solution

The fourth proportional to 557,005.68, 768,668.76 and 302,357.16 is: 417,253.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,005.68 : 768,668.76 = 302,357.16 : x
  2. Step 2: Convert to fraction form
    557,005.68/768,668.76 = 302,357.16/x
  3. Step 3: Cross multiply
    557,005.68x = 768,668.76 × 302,357.16
  4. Step 4: Simplify right side
    557,005.68x = 232,412,503,254.32
  5. Step 5: Solve for x
    x = 232,412,503,254.32/557,005.68
  6. Step 6: Final answer
    x = 417,253.38

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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.