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Finding the Fourth Proportional to 6,663,972.51, 9,996,332.68 and 1,871,288.10

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Solution

The fourth proportional to 6,663,972.51, 9,996,332.68 and 1,871,288.10 is: 2,807,037.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,663,972.51 : 9,996,332.68 = 1,871,288.10 : x
  2. Step 2: Convert to fraction form
    6,663,972.51/9,996,332.68 = 1,871,288.10/x
  3. Step 3: Cross multiply
    6,663,972.51x = 9,996,332.68 × 1,871,288.10
  4. Step 4: Simplify right side
    6,663,972.51x = 18,706,018,390,064.22
  5. Step 5: Solve for x
    x = 18,706,018,390,064.22/6,663,972.51
  6. Step 6: Final answer
    x = 2,807,037.15

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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.