Home / 191,506,013.70-287,259,020.55-76,508,304.90

Finding the Fourth Proportional to 191,506,013.70, 287,259,020.55 and 76,508,304.90

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Solution

The fourth proportional to 191,506,013.70, 287,259,020.55 and 76,508,304.90 is: 114,762,457.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,506,013.70 : 287,259,020.55 = 76,508,304.90 : x
  2. Step 2: Convert to fraction form
    191,506,013.70/287,259,020.55 = 76,508,304.90/x
  3. Step 3: Cross multiply
    191,506,013.70x = 287,259,020.55 × 76,508,304.90
  4. Step 4: Simplify right side
    191,506,013.70x = 21,977,700,729,514,768
  5. Step 5: Solve for x
    x = 21,977,700,729,514,768/191,506,013.70
  6. Step 6: Final answer
    x = 114,762,457.35

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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.