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Finding the Fourth Proportional to 912,913.40, 1,366,259.70 and 912,913.40

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Solution

The fourth proportional to 912,913.40, 1,366,259.70 and 912,913.40 is: 1,366,259.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,913.40 : 1,366,259.70 = 912,913.40 : x
  2. Step 2: Convert to fraction form
    912,913.40/1,366,259.70 = 912,913.40/x
  3. Step 3: Cross multiply
    912,913.40x = 1,366,259.70 × 912,913.40
  4. Step 4: Simplify right side
    912,913.40x = 1,247,276,788,009.98
  5. Step 5: Solve for x
    x = 1,247,276,788,009.98/912,913.40
  6. Step 6: Final answer
    x = 1,366,259.70

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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.