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Finding the Fourth Proportional to 936,626,659.60, 1,404,939,989.40 and 879,231,031.60

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Solution

The fourth proportional to 936,626,659.60, 1,404,939,989.40 and 879,231,031.60 is: 1,318,846,547.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    936,626,659.60 : 1,404,939,989.40 = 879,231,031.60 : x
  2. Step 2: Convert to fraction form
    936,626,659.60/1,404,939,989.40 = 879,231,031.60/x
  3. Step 3: Cross multiply
    936,626,659.60x = 1,404,939,989.40 × 879,231,031.60
  4. Step 4: Simplify right side
    936,626,659.60x = 1,235,266,836,216,255,232
  5. Step 5: Solve for x
    x = 1,235,266,836,216,255,232/936,626,659.60
  6. Step 6: Final answer
    x = 1,318,846,547.40

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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.