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Finding the Fourth Proportional to 879,693.68, 1,213,616.41 and 535,253.49

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Solution

The fourth proportional to 879,693.68, 1,213,616.41 and 535,253.49 is: 738,430.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,693.68 : 1,213,616.41 = 535,253.49 : x
  2. Step 2: Convert to fraction form
    879,693.68/1,213,616.41 = 535,253.49/x
  3. Step 3: Cross multiply
    879,693.68x = 1,213,616.41 × 535,253.49
  4. Step 4: Simplify right side
    879,693.68x = 649,592,417,635.64
  5. Step 5: Solve for x
    x = 649,592,417,635.64/879,693.68
  6. Step 6: Final answer
    x = 738,430.24

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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.