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Finding the Fourth Proportional to 1,143,746.03, 1,712,913.78 and 993,167.84

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Solution

The fourth proportional to 1,143,746.03, 1,712,913.78 and 993,167.84 is: 1,487,402.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,143,746.03 : 1,712,913.78 = 993,167.84 : x
  2. Step 2: Convert to fraction form
    1,143,746.03/1,712,913.78 = 993,167.84/x
  3. Step 3: Cross multiply
    1,143,746.03x = 1,712,913.78 × 993,167.84
  4. Step 4: Simplify right side
    1,143,746.03x = 1,701,210,878,988.84
  5. Step 5: Solve for x
    x = 1,701,210,878,988.84/1,143,746.03
  6. Step 6: Final answer
    x = 1,487,402.65

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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.