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Finding the Fourth Proportional to 572,897.48, 790,571.70 and 318,264.20

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Solution

The fourth proportional to 572,897.48, 790,571.70 and 318,264.20 is: 439,189.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,897.48 : 790,571.70 = 318,264.20 : x
  2. Step 2: Convert to fraction form
    572,897.48/790,571.70 = 318,264.20/x
  3. Step 3: Cross multiply
    572,897.48x = 790,571.70 × 318,264.20
  4. Step 4: Simplify right side
    572,897.48x = 251,610,669,643.14
  5. Step 5: Solve for x
    x = 251,610,669,643.14/572,897.48
  6. Step 6: Final answer
    x = 439,189.70

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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.