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Finding the Fourth Proportional to 15,139,643.10, 22,709,464.65 and 15,139,643.10

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Solution

The fourth proportional to 15,139,643.10, 22,709,464.65 and 15,139,643.10 is: 22,709,464.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,139,643.10 : 22,709,464.65 = 15,139,643.10 : x
  2. Step 2: Convert to fraction form
    15,139,643.10/22,709,464.65 = 15,139,643.10/x
  3. Step 3: Cross multiply
    15,139,643.10x = 22,709,464.65 × 15,139,643.10
  4. Step 4: Simplify right side
    15,139,643.10x = 343,813,189,793,066.38
  5. Step 5: Solve for x
    x = 343,813,189,793,066.38/15,139,643.10
  6. Step 6: Final answer
    x = 22,709,464.65

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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.