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Finding the Fourth Proportional to 710,705,852.58, 981,020,641.77 and 488,423,356.50

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Solution

The fourth proportional to 710,705,852.58, 981,020,641.77 and 488,423,356.50 is: 674,193,680.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,705,852.58 : 981,020,641.77 = 488,423,356.50 : x
  2. Step 2: Convert to fraction form
    710,705,852.58/981,020,641.77 = 488,423,356.50/x
  3. Step 3: Cross multiply
    710,705,852.58x = 981,020,641.77 × 488,423,356.50
  4. Step 4: Simplify right side
    710,705,852.58x = 479,153,394,649,087,488
  5. Step 5: Solve for x
    x = 479,153,394,649,087,488/710,705,852.58
  6. Step 6: Final answer
    x = 674,193,680.70

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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.