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Finding the Fourth Proportional to 557,148.76, 768,853.14 and 302,497.72

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Solution

The fourth proportional to 557,148.76, 768,853.14 and 302,497.72 is: 417,440.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,148.76 : 768,853.14 = 302,497.72 : x
  2. Step 2: Convert to fraction form
    557,148.76/768,853.14 = 302,497.72/x
  3. Step 3: Cross multiply
    557,148.76x = 768,853.14 × 302,497.72
  4. Step 4: Simplify right side
    557,148.76x = 232,576,321,864.84
  5. Step 5: Solve for x
    x = 232,576,321,864.84/557,148.76
  6. Step 6: Final answer
    x = 417,440.26

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Double scale
Find fourth proportional to 557,149.76, 768,854.52 and 302,498.72
Similar ratio
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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.