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Finding the Fourth Proportional to 191,369,139.40, 287,053,709.10 and 191,369,139.40

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Solution

The fourth proportional to 191,369,139.40, 287,053,709.10 and 191,369,139.40 is: 287,053,709.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,369,139.40 : 287,053,709.10 = 191,369,139.40 : x
  2. Step 2: Convert to fraction form
    191,369,139.40/287,053,709.10 = 191,369,139.40/x
  3. Step 3: Cross multiply
    191,369,139.40x = 287,053,709.10 × 191,369,139.40
  4. Step 4: Simplify right side
    191,369,139.40x = 54,933,221,272,044,952
  5. Step 5: Solve for x
    x = 54,933,221,272,044,952/191,369,139.40
  6. Step 6: Final answer
    x = 287,053,709.10

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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.