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Finding the Fourth Proportional to 704,158,519.80, 1,056,237,779.70 and 674,303,345.40

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Solution

The fourth proportional to 704,158,519.80, 1,056,237,779.70 and 674,303,345.40 is: 1,011,455,018.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,158,519.80 : 1,056,237,779.70 = 674,303,345.40 : x
  2. Step 2: Convert to fraction form
    704,158,519.80/1,056,237,779.70 = 674,303,345.40/x
  3. Step 3: Cross multiply
    704,158,519.80x = 1,056,237,779.70 × 674,303,345.40
  4. Step 4: Simplify right side
    704,158,519.80x = 712,224,668,389,578,240
  5. Step 5: Solve for x
    x = 712,224,668,389,578,240/704,158,519.80
  6. Step 6: Final answer
    x = 1,011,455,018.10

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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.