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Finding the Fourth Proportional to 1,685,655, 2,528,484.93 and 688,383

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Solution

The fourth proportional to 1,685,655, 2,528,484.93 and 688,383 is: 1,032,575.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,685,655 : 2,528,484.93 = 688,383 : x
  2. Step 2: Convert to fraction form
    1,685,655/2,528,484.93 = 688,383/x
  3. Step 3: Cross multiply
    1,685,655x = 2,528,484.93 × 688,383
  4. Step 4: Simplify right side
    1,685,655x = 1,740,566,041,568.19
  5. Step 5: Solve for x
    x = 1,740,566,041,568.19/1,685,655
  6. Step 6: Final answer
    x = 1,032,575.49

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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.