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Finding the Fourth Proportional to 899,888, 1,241,871.36 and 497,505.92

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Solution

The fourth proportional to 899,888, 1,241,871.36 and 497,505.92 is: 686,572.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,888 : 1,241,871.36 = 497,505.92 : x
  2. Step 2: Convert to fraction form
    899,888/1,241,871.36 = 497,505.92/x
  3. Step 3: Cross multiply
    899,888x = 1,241,871.36 × 497,505.92
  4. Step 4: Simplify right side
    899,888x = 617,838,353,478.45
  5. Step 5: Solve for x
    x = 617,838,353,478.45/899,888
  6. Step 6: Final answer
    x = 686,572.50

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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.