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Finding the Fourth Proportional to 917,756.86, 1,266,540 and 627,975.86

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Solution

The fourth proportional to 917,756.86, 1,266,540 and 627,975.86 is: 866,631.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,756.86 : 1,266,540 = 627,975.86 : x
  2. Step 2: Convert to fraction form
    917,756.86/1,266,540 = 627,975.86/x
  3. Step 3: Cross multiply
    917,756.86x = 1,266,540 × 627,975.86
  4. Step 4: Simplify right side
    917,756.86x = 795,356,545,724.40
  5. Step 5: Solve for x
    x = 795,356,545,724.40/917,756.86
  6. Step 6: Final answer
    x = 866,631.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.