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Finding the Fourth Proportional to 869,697.77, 1,200,239.68 and 502,190.40

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Solution

The fourth proportional to 869,697.77, 1,200,239.68 and 502,190.40 is: 693,055.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,697.77 : 1,200,239.68 = 502,190.40 : x
  2. Step 2: Convert to fraction form
    869,697.77/1,200,239.68 = 502,190.40/x
  3. Step 3: Cross multiply
    869,697.77x = 1,200,239.68 × 502,190.40
  4. Step 4: Simplify right side
    869,697.77x = 602,748,842,484.12
  5. Step 5: Solve for x
    x = 602,748,842,484.12/869,697.77
  6. Step 6: Final answer
    x = 693,055.53

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Double scale
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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.