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Finding the Fourth Proportional to 864,055.80, 1,293,750.90 and 864,055.80

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Solution

The fourth proportional to 864,055.80, 1,293,750.90 and 864,055.80 is: 1,293,750.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,055.80 : 1,293,750.90 = 864,055.80 : x
  2. Step 2: Convert to fraction form
    864,055.80/1,293,750.90 = 864,055.80/x
  3. Step 3: Cross multiply
    864,055.80x = 1,293,750.90 × 864,055.80
  4. Step 4: Simplify right side
    864,055.80x = 1,117,872,968,900.22
  5. Step 5: Solve for x
    x = 1,117,872,968,900.22/864,055.80
  6. Step 6: Final answer
    x = 1,293,750.90

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1.5x scale

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.