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Finding the Fourth Proportional to 624,421.90, 935,648.70 and 524,038.60

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Solution

The fourth proportional to 624,421.90, 935,648.70 and 524,038.60 is: 785,231.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,421.90 : 935,648.70 = 524,038.60 : x
  2. Step 2: Convert to fraction form
    624,421.90/935,648.70 = 524,038.60/x
  3. Step 3: Cross multiply
    624,421.90x = 935,648.70 × 524,038.60
  4. Step 4: Simplify right side
    624,421.90x = 490,316,034,839.82
  5. Step 5: Solve for x
    x = 490,316,034,839.82/624,421.90
  6. Step 6: Final answer
    x = 785,231.96

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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.