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Finding the Fourth Proportional to 869,707.68, 1,200,208.80 and 525,495.84

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Solution

The fourth proportional to 869,707.68, 1,200,208.80 and 525,495.84 is: 725,191.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,707.68 : 1,200,208.80 = 525,495.84 : x
  2. Step 2: Convert to fraction form
    869,707.68/1,200,208.80 = 525,495.84/x
  3. Step 3: Cross multiply
    869,707.68x = 1,200,208.80 × 525,495.84
  4. Step 4: Simplify right side
    869,707.68x = 630,704,731,531.39
  5. Step 5: Solve for x
    x = 630,704,731,531.39/869,707.68
  6. Step 6: Final answer
    x = 725,191.63

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Half scale
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Double scale
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Similar ratio
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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.