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Finding the Fourth Proportional to 719,566,200.58, 993,001,689.04 and 389,541,339.58

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Solution

The fourth proportional to 719,566,200.58, 993,001,689.04 and 389,541,339.58 is: 537,567,228.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,566,200.58 : 993,001,689.04 = 389,541,339.58 : x
  2. Step 2: Convert to fraction form
    719,566,200.58/993,001,689.04 = 389,541,339.58/x
  3. Step 3: Cross multiply
    719,566,200.58x = 993,001,689.04 × 389,541,339.58
  4. Step 4: Simplify right side
    719,566,200.58x = 386,815,208,153,844,160
  5. Step 5: Solve for x
    x = 386,815,208,153,844,160/719,566,200.58
  6. Step 6: Final answer
    x = 537,567,228.48

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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.