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Finding the Fourth Proportional to 884,952,913.95, 1,221,235,140.80 and 488,475,978.33

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Solution

The fourth proportional to 884,952,913.95, 1,221,235,140.80 and 488,475,978.33 is: 674,096,916.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    884,952,913.95 : 1,221,235,140.80 = 488,475,978.33 : x
  2. Step 2: Convert to fraction form
    884,952,913.95/1,221,235,140.80 = 488,475,978.33/x
  3. Step 3: Cross multiply
    884,952,913.95x = 1,221,235,140.80 × 488,475,978.33
  4. Step 4: Simplify right side
    884,952,913.95x = 596,544,030,173,255,296
  5. Step 5: Solve for x
    x = 596,544,030,173,255,296/884,952,913.95
  6. Step 6: Final answer
    x = 674,096,916.08

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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.