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Finding the Fourth Proportional to 438,000.76, 657,001.16 and 105,576.76

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Solution

The fourth proportional to 438,000.76, 657,001.16 and 105,576.76 is: 158,365.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,000.76 : 657,001.16 = 105,576.76 : x
  2. Step 2: Convert to fraction form
    438,000.76/657,001.16 = 105,576.76/x
  3. Step 3: Cross multiply
    438,000.76x = 657,001.16 × 105,576.76
  4. Step 4: Simplify right side
    438,000.76x = 69,364,053,789.04
  5. Step 5: Solve for x
    x = 69,364,053,789.04/438,000.76
  6. Step 6: Final answer
    x = 158,365.14

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1.5x scale

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.