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Finding the Fourth Proportional to 358,710,534.60, 538,065,801.90 and 355,687,225.80

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Solution

The fourth proportional to 358,710,534.60, 538,065,801.90 and 355,687,225.80 is: 533,530,838.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,710,534.60 : 538,065,801.90 = 355,687,225.80 : x
  2. Step 2: Convert to fraction form
    358,710,534.60/538,065,801.90 = 355,687,225.80/x
  3. Step 3: Cross multiply
    358,710,534.60x = 538,065,801.90 × 355,687,225.80
  4. Step 4: Simplify right side
    358,710,534.60x = 191,383,132,375,663,360
  5. Step 5: Solve for x
    x = 191,383,132,375,663,360/358,710,534.60
  6. Step 6: Final answer
    x = 533,530,838.70

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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.