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Finding the Fourth Proportional to 178,123,398.80, 249,731,076.40 and 178,123,398.80

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Solution

The fourth proportional to 178,123,398.80, 249,731,076.40 and 178,123,398.80 is: 249,731,076.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,123,398.80 : 249,731,076.40 = 178,123,398.80 : x
  2. Step 2: Convert to fraction form
    178,123,398.80/249,731,076.40 = 178,123,398.80/x
  3. Step 3: Cross multiply
    178,123,398.80x = 249,731,076.40 × 178,123,398.80
  4. Step 4: Simplify right side
    178,123,398.80x = 44,482,948,114,350,472
  5. Step 5: Solve for x
    x = 44,482,948,114,350,472/178,123,398.80
  6. Step 6: Final answer
    x = 249,731,076.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.