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Finding the Fourth Proportional to 7,240,700.40, 10,851,719.40 and 5,549,420.40

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Solution

The fourth proportional to 7,240,700.40, 10,851,719.40 and 5,549,420.40 is: 8,316,978.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,240,700.40 : 10,851,719.40 = 5,549,420.40 : x
  2. Step 2: Convert to fraction form
    7,240,700.40/10,851,719.40 = 5,549,420.40/x
  3. Step 3: Cross multiply
    7,240,700.40x = 10,851,719.40 × 5,549,420.40
  4. Step 4: Simplify right side
    7,240,700.40x = 60,220,753,013,435.77
  5. Step 5: Solve for x
    x = 60,220,753,013,435.77/7,240,700.40
  6. Step 6: Final answer
    x = 8,316,978.98

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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.