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Finding the Fourth Proportional to 577,186.40, 865,779.60 and 472,210.40

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Solution

The fourth proportional to 577,186.40, 865,779.60 and 472,210.40 is: 708,315.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,186.40 : 865,779.60 = 472,210.40 : x
  2. Step 2: Convert to fraction form
    577,186.40/865,779.60 = 472,210.40/x
  3. Step 3: Cross multiply
    577,186.40x = 865,779.60 × 472,210.40
  4. Step 4: Simplify right side
    577,186.40x = 408,830,131,227.84
  5. Step 5: Solve for x
    x = 408,830,131,227.84/577,186.40
  6. Step 6: Final answer
    x = 708,315.60

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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.