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Finding the Fourth Proportional to 577,132.80, 865,699.20 and 535,142.40

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Solution

The fourth proportional to 577,132.80, 865,699.20 and 535,142.40 is: 802,713.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,132.80 : 865,699.20 = 535,142.40 : x
  2. Step 2: Convert to fraction form
    577,132.80/865,699.20 = 535,142.40/x
  3. Step 3: Cross multiply
    577,132.80x = 865,699.20 × 535,142.40
  4. Step 4: Simplify right side
    577,132.80x = 463,272,347,566.08
  5. Step 5: Solve for x
    x = 463,272,347,566.08/577,132.80
  6. Step 6: Final answer
    x = 802,713.60

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Similar ratio
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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.