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Finding the Fourth Proportional to 267,547.61, 401,362.87 and 90,040.76

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Solution

The fourth proportional to 267,547.61, 401,362.87 and 90,040.76 is: 135,075.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,547.61 : 401,362.87 = 90,040.76 : x
  2. Step 2: Convert to fraction form
    267,547.61/401,362.87 = 90,040.76/x
  3. Step 3: Cross multiply
    267,547.61x = 401,362.87 × 90,040.76
  4. Step 4: Simplify right side
    267,547.61x = 36,139,018,628.89
  5. Step 5: Solve for x
    x = 36,139,018,628.89/267,547.61
  6. Step 6: Final answer
    x = 135,075.10

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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.