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Finding the Fourth Proportional to 670,279.30, 925,430.80 and 514,953.90

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Solution

The fourth proportional to 670,279.30, 925,430.80 and 514,953.90 is: 710,978.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,279.30 : 925,430.80 = 514,953.90 : x
  2. Step 2: Convert to fraction form
    670,279.30/925,430.80 = 514,953.90/x
  3. Step 3: Cross multiply
    670,279.30x = 925,430.80 × 514,953.90
  4. Step 4: Simplify right side
    670,279.30x = 476,554,199,640.12
  5. Step 5: Solve for x
    x = 476,554,199,640.12/670,279.30
  6. Step 6: Final answer
    x = 710,978.54

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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.