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Finding the Fourth Proportional to 573,133.85, 790,931.88 and 315,038.98

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Solution

The fourth proportional to 573,133.85, 790,931.88 and 315,038.98 is: 434,757.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,133.85 : 790,931.88 = 315,038.98 : x
  2. Step 2: Convert to fraction form
    573,133.85/790,931.88 = 315,038.98/x
  3. Step 3: Cross multiply
    573,133.85x = 790,931.88 × 315,038.98
  4. Step 4: Simplify right side
    573,133.85x = 249,174,372,724.68
  5. Step 5: Solve for x
    x = 249,174,372,724.68/573,133.85
  6. Step 6: Final answer
    x = 434,757.73

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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.